16 Psyche is believed to be the core of a dead planet. NASA plans to explore asteroid 16 Psyche – long thought to be the core of a dead planet – in 2022 to determine if it actually contains the precious metal. worth 10 trillion USD, which means making everyone on Earth a billionaire or not. Before that time, however, a new study suggests that 16 Psyche is more than likely just a pile of debris. Research published in the journal Planetary Science shows that 16 Psyche is composed of 82.5% metal, 7% iron content pyroxene and 10.5% carbon chondrite. It can also have a bulk density – i.e. the degree of free space inside – of 35%. These numbers are much lower than previous estimates that said it could contain up to 95% metals, mainly iron, nickel and gold. NASA has planned to probe the asteroid 16 Psyche, which is said to be filled with iron, gold, nickel and platinum, in 2022. The study’s lead author, David Cantillo, a senior at UA Arizona University, said in a statement: “The drop in metal content and bulk density is interesting because it shows that 16 Psyche is very strong. different than previously thought”. “It would come as a surprise to see Psyche as a pile of debris, but our data continue to show low bulk density estimates despite its high metal content,” Cantillo said. If the “gold-filled” asteroid was more like a wreck and had less metal inside, as Cantillo and other researchers believe, it wouldn’t be that different from other asteroids in the Solar System, for example. like the asteroid Bennu. Now, NASA’s OSIRIS-REx mission recently embarked on a 2.2 billion-kilometer journey back to Earth after collecting nearly 1kg of rock and dust from Bennu, which could help shed light on how the Solar System formed. . To arrive at their new discovery, the researchers reconstructed the surface of 16 Psyche in the lab, mixing the different ingredients until the patterns of visible light matched those of the asteroid. “Having a lower metal content than previously thought means the asteroid may have collided with asteroids containing more common carbon chondrites, depositing a surface layer,” Cantillo said. that we are observing”. However, NASA notes 16 Psyche remains a major concern for scientists. It is the 16th asteroid discovered on March 17, 1852 by the Italian astronomer, Annibale de Gasparis. 16 Psyche takes about 5 years to orbit the Sun once, but only 4 hours to rotate on its axis, making the day on this asteroid only 1/6th of the day on Earth. According to EarthSky.org, 16 Psyche has a diameter of 182 km, containing 1% of all metals in the asteroid belt. Watch a simulation video of asteroid 16 Psyche (Source Daily Mail) Even if 16 Psyche is worth less than the $10 trillion figure, it’s still valuable to researchers hoping to learn more about what they believe to be the remains of a long-dead planet. . Study author Cantillo said: “The opportunity to study the exposed core of a planet is extremely rare, which is why they sent spacecraft missions there, but our work shows that 16 Psyche is much more interesting than anticipated.” The researchers also believe that there is water on 16 Psyche’s surface, so they will look to merge their data with other missions to asteroids to determine how much water is present. The $117 million spacecraft — which NASA began building in July 2020 — will go into space aboard a SpaceX Falcon Heavy rocket. It is expected to reach asteroid 16 Psyche in the asteroid belt in early 2026. The spacecraft will travel for 21 months in asteroid orbit, mapping and studying the properties of the giant meteorite, with the goal of determining if it is indeed the core of a planet. Asteroid 16 Psyche has long been thought to contain large amounts of iron, nickel, gold and platinum. The Metal World of 16 Psyche 16 Psyche is located in the large asteroid belt between Mars and Jupiter, and may have started as a planet, before it was partially destroyed during the formation of the Solar System. It is now a 200km-wide block of metal, made up of iron, nickel and several other rare metals, including gold, platinum and copper. Thus, it could provide a unique view of the violent collisions that created the Earth and the planets. NASA’s mission will seek to determine whether Psyche was the core of an early planet, how old it is, whether it formed in ways similar to Earth’s core and its surface. how. NASA will send an unmanned spacecraft mission to 16 Psyche, scheduled to launch in August 2022. 16 Psyche, which could be 370 million kilometers away from Earth, is one of the most mysterious objects in our Solar System, and scientists may soon get a close-up look thanks to a newly identified NASA mission take. If the asteroid could be transported back to Earth, the iron alone would be worth $10 trillion. Its value would be large enough to destroy commodity prices and cause the world economy – worth $73.7 trillion – to collapse. Assuming the market for material from asteroid 16 Psyche is returned to Earth, this could cause the value of precious metals to plummet, completely devaluing all holdings including those of governments and all companies engaged in the exploitation, distribution and sale of such commodities.

16 Psyche is believed to be the core of a dead planet. NASA plans to explore asteroid 16 Psyche – long thought to be the core of a dead planet – in 2022 to determine if it actually contains the precious metal. worth 10 trillion USD, which means making everyone on Earth a billionaire or not. Before that time, however, a new study suggests that 16 Psyche is more than likely just a pile of debris. Research published in the journal Planetary Science shows that 16 Psyche is composed of 82.5% metal, 7% iron content pyroxene and 10.5% carbon chondrite. It can also have a bulk density – i.e. the degree of free space inside – of 35%. These numbers are much lower than previous estimates that said it could contain up to 95% metals, mainly iron, nickel and gold. NASA has planned to probe the asteroid 16 Psyche, which is said to be filled with iron, gold, nickel and platinum, in 2022. The study’s lead author, David Cantillo, a senior at UA Arizona University, said in a statement: “The drop in metal content and bulk density is interesting because it shows that 16 Psyche is very strong. different than previously thought”. “It would come as a surprise to see Psyche as a pile of debris, but our data continue to show low bulk density estimates despite its high metal content,” Cantillo said. If the “gold-filled” asteroid was more like a wreck and had less metal inside, as Cantillo and other researchers believe, it wouldn’t be that different from other asteroids in the Solar System, for example. like the asteroid Bennu. Now, NASA’s OSIRIS-REx mission recently embarked on a 2.2 billion-kilometer journey back to Earth after collecting nearly 1kg of rock and dust from Bennu, which could help shed light on how the Solar System formed. . To arrive at their new discovery, the researchers reconstructed the surface of 16 Psyche in the lab, mixing the different ingredients until the patterns of visible light matched those of the asteroid. “Having a lower metal content than previously thought means the asteroid may have collided with asteroids containing more common carbon chondrites, depositing a surface layer,” Cantillo said. that we are observing”. However, NASA notes 16 Psyche remains a major concern for scientists. It is the 16th asteroid discovered on March 17, 1852 by the Italian astronomer, Annibale de Gasparis. 16 Psyche takes about 5 years to orbit the Sun once, but only 4 hours to rotate on its axis, making the day on this asteroid only 1/6th of the day on Earth. According to EarthSky.org, 16 Psyche has a diameter of 182 km, containing 1% of all metals in the asteroid belt. Watch a simulation video of asteroid 16 Psyche (Source Daily Mail) Even if 16 Psyche is worth less than the $10 trillion figure, it’s still valuable to researchers hoping to learn more about what they believe to be the remains of a long-dead planet. . Study author Cantillo said: “The opportunity to study the exposed core of a planet is extremely rare, which is why they sent spacecraft missions there, but our work shows that 16 Psyche is much more interesting than anticipated.” The researchers also believe that there is water on 16 Psyche’s surface, so they will look to merge their data with other missions to asteroids to determine how much water is present. The $117 million spacecraft — which NASA began building in July 2020 — will go into space aboard a SpaceX Falcon Heavy rocket. It is expected to reach asteroid 16 Psyche in the asteroid belt in early 2026. The spacecraft will travel for 21 months in asteroid orbit, mapping and studying the properties of the giant meteorite, with the goal of determining if it is indeed the core of a planet. Asteroid 16 Psyche has long been thought to contain large amounts of iron, nickel, gold and platinum. The Metal World of 16 Psyche 16 Psyche is located in the large asteroid belt between Mars and Jupiter, and may have started as a planet, before it was partially destroyed during the formation of the Solar System. It is now a 200km-wide block of metal, made up of iron, nickel and several other rare metals, including gold, platinum and copper. Thus, it could provide a unique view of the violent collisions that created the Earth and the planets. NASA’s mission will seek to determine whether Psyche was the core of an early planet, how old it is, whether it formed in ways similar to Earth’s core and its surface. how. NASA will send an unmanned spacecraft mission to 16 Psyche, scheduled to launch in August 2022. 16 Psyche, which could be 370 million kilometers away from Earth, is one of the most mysterious objects in our Solar System, and scientists may soon get a close-up look thanks to a newly identified NASA mission take. If the asteroid could be transported back to Earth, the iron alone would be worth $10 trillion. Its value would be large enough to destroy commodity prices and cause the world economy – worth $73.7 trillion – to collapse. Assuming the market for material from asteroid 16 Psyche is returned to Earth, this could cause the value of precious metals to plummet, completely devaluing all holdings including those of governments and all companies engaged in the exploitation, distribution and sale of such commodities.

You need to go through labor pains and the whole process of childbirth. You must cooperate with the doctor to give birth to the baby smoothly if you endure the “tenth-level pain”. I think that after the umbilical cord is cut, the parturient can breathe a sigh of relief and be “forced to stay” for observation. For a while.

Many parturients express their incomprehension. They are exhausted physically and mentally after giving birth and cannot sleep. They have to stay in the delivery room for another two hours. Why?

After the mother gave birth, the newborn was taken out first, and the mother had to wait another two hours?

My colleague Yueyue just gave birth to a second child. When she gave birth to Dabao, she was delivered by cesarean section. After giving birth, she went to the ward with her baby. I thought that Shun had a second child, and he could go back to rest directly after the baby was born.

Yueyue’s husband waited outside the delivery room for a long time, and saw that the nurse took the child out first, but Yueyue was not pushed out of the delivery room. Some worried about whether something would go wrong, she hurriedly asked: “How is my daughter-in-law? Why hasn’t she come out yet?”

The nurse explained patiently: “ The mother needs to be observed for another 2 hours , You can go back to the ward without any problems! ”

Yueyue’s husband was still a little worried, and insisted on waiting outside the delivery room until she saw her being pushed out of the delivery room.

Why is it necessary to observe for 2 hours before going out of the delivery room after the normal delivery?

More and more expectant mothers hope that they will be able to give birth smoothly, the baby will be healthier, and the postpartum recovery will be more advantageous for the baby mother, and the cycle will be shorter than that of the cesarean section.

The mothers who have had the experience of normal delivery know that there are three stages of delivery. The first stage is the dilated period of the uterus, and the second stage is the delivery process that is common in movies and TV dramas, until the fetus is delivered. The third stage of labor is the process of delivery of the placenta, and there is actually a fourth stage of labor. Observation after normal delivery is called the “fourth stage of labor.” After the fetus is delivered smoothly, Two hours after delivery, the mother is at high risk , The incidence of postpartum hemorrhage is extremely high. In order to ensure postpartum safety, they will be “forced to stay” in the delivery room for observation. If there is an emergency in the parturient, it is convenient for medical staff to rescue the child immediately to avoid life-threatening. This can greatly reduce the mortality of the parturient.

These three points need to be observed after childbirth, each of which is related to the safety of the mother. It is recommended that mothers-to-be save them

Although the postpartum recovery is faster, the postpartum risk is also very high, especially during the two hours postpartum period, you need to be extra careful, mainly to observe the following three points: [First point]Is there any bleeding after childbirth?

According to statistics, 80% of postpartum hemorrhage occurs within 2 hours after delivery.

The 2 hours postpartum for normal mothers is a critical period for observing the amount of bleeding. If you encounter postpartum hemorrhage, it is more dangerous , It may be life-threatening. Stay in the delivery room 2 hours after delivery to observe the bleeding, which is convenient for timely rescue.

[Second point]Observe the mental and physical condition of the parturient

Many expectant mothers feel that they can relax and rest after giving birth. The two-hour observation time in the delivery room should be followed by monitoring the vital signs of the mother, such as Heartbeat, breathing, blood pressure Wait for the basic situation, but also observe whether the mother’s consciousness is sober.

It is normal for the body to be weak after childbirth, if it occurs Malaise, may be a manifestation of physical problems , The medical staff will observe whether the mother’s consciousness is clear through communication.

[3rd point]Observe whether there are contractions

After the fetus is successfully delivered, the enlarged uterus during pregnancy begins to contract gradually, and the observation period is 2 hours after delivery. It also depends on the contraction of the uterus If the uterus can contract normally, it will compress the blood vessels and reduce the incidence of postpartum hemorrhage.

Kojima has something to say

The 2-hour observation in the delivery room after the normal delivery is necessary for the safety of the mother. In addition to the above three points, some women have incomplete placental delivery. The doctor also helps clean up the placenta .

If the expectant mother wants to have a baby smoothly, these small details of the smooth birth also need to be mastered in advance to avoid panic during childbirth. Staying in the delivery room for two more hours after the baby is born is for the sake of the delivery room, so don’t think about it. , Scare yourself!

I hope that all pregnant mothers give birth smoothly and give birth to a healthy and smart baby!

In the region, the South and the Central Highlands provinces, many places are having rain and unfavorable weather. This will directly affect the observation of the lunar eclipse. In the sky of Hanoi, according to the forecast about 6:30 p.m The Moon will begin to appear on the horizon. At this time, it is possible that the Moon has appeared but is located right on the horizon and is being obscured by buildings. In Hanoi, viewers can observe the Lunar Eclipse in the direction between East and Southeast. However, right now (18:20) there are some pretty big clouds near the horizon. Photo at 6:20 pm in Hanoi Photos at 6:30 p.m. The sun was slowly disappearing. Theoretically, the Moon is now close to the horizon to the East, Southeast. From 6:45 pm to 7:00 pm, when the moon is high enough, this is convenient for viewers to observe. According to reflection, in Ninh Thuan, the Moon has begun to rise and viewers can observe. In Da Nang, the weather is nice and viewers can observe well. The Moon now has just finished its total phase, the Moon is gradually moving out of the shadow. Pictures at 6:30 pm In Ha Tinh: The coastal area can be observed well. Viewers can find the Moon in the East, Southeast. Some mountainous areas of Ha Tinh may have rain, making it difficult to observe. In Taiwan, a place very close to Vietnam, the weather conditions are favorable, so observing the lunar eclipse is quite easy. Below is an image of a lunar eclipse recorded in Japan. At this time, the Moon has passed its total phase and is gradually leaving the dark side of the Earth. Pictures in Japan Quang Ngai: The lunar eclipse has begun to appear. The image was recorded by a universal observatory telescope. The Moon in Quang Ngai The moon appeared dimly in the sky of Hanoi. The moon appeared dimly in the sky of Hanoi. Nha Trang and Phu Yen: The moon is rising and people can observe a partial lunar eclipse. Binh Dinh, Quang Nam: The weather is good and many places can observe the lunar eclipse. 19h00: The lunar eclipse was visible in Hanoi. The image was recorded under a telescope. Observation will be more difficult but still doable with the naked eye. Lunar eclipse can be observed in Hanoi When the Sun, Earth, and Moon are aligned or approximately aligned, part or all of the Moon will be obscured from the Sun by the Earth, causing a lunar eclipse. Lunar eclipse image recorded at 19:00 in Quang Ngai. 40% of the Moon’s area has entered the Earth’s semi-dark region. Lunar eclipse image recorded at 19:00 in Quang Ngai. The image of the lunar eclipse in Hanoi was recorded under a simple telescope at 19:15. It can be seen that 50% of the Moon’s area has left the Earth’s shadow. Photo taken during the Lunar Eclipse in Hanoi at 19:15 on May 26. At this time in some places in Hanoi it is windy. This will have a certain effect on those observing with a telescope. In Ho Chi Minh City at this time it is cloudy, viewers have almost no chance to observe the lunar eclipse. In Hanoi, 60% of the Moon has left the Earth’s shadow. According to forecast, the lunar eclipse will end at 19:52′. Thus, there is only about 30 minutes left for viewers to observe this phenomenon. 19:30: The lunar eclipse was recorded in Hanoi at 19:30. At this time, 70% of the area is bright again. 70% of the Moon was bright again at 19:30, observed from Hanoi. 19:45 : Image of lunar eclipse recorded in Hanoi. It can be seen that the Moon has almost completely come out of the shadow of the Earth. The Moon has almost completely come out of the Earth’s shadow. 19:55 : In Hanoi, the partial lunar eclipse has ended. The Moon is now moving into the Earth’s semi-dark region. In about 1 hour, from 20h00 to 20h49, there will be a penumbral lunar eclipse. At this point, the Moon will be slightly darker and dimmer than usual. After 9pm tonight (May 26), the lunar eclipse will end completely. At that time, the entire Moon will be directly illuminated by the Sun again. Live: Total lunar eclipse and super moon Vietnam on May 26 26 Today’s lunar eclipse coincides with the time when the Moon is at its closest position to the Earth. Therefore, observers will be able to witness the dual phenomenon of lunar eclipse and supermoon. Simulation of a lunar eclipse. This lunar eclipse in Vietnam will be different when accompanied by a super blood moon phenomenon. In the legends of some cultures, lunar eclipses are often associated with some bad luck. In ancient times, it was believed that a lunar eclipse was a sign of great change and foreshadowed bad luck to come. In modern times, many people still hold bad views about this phenomenon. Readers can visit here for a correct and accurate understanding of the lunar eclipse. This year, Vietnam is located in a geographical area that can observe the lunar eclipse well. However, depending on the region, the ability to observe as well as the time to observe the lunar eclipse varies between provinces. According to the National Center for Hydro-Meteorological Forecasting, some areas this afternoon will have very favorable weather to observe the lunar eclipse. Readers can visit here to know exactly where they live, whether this phenomenon can be observed. Landmarks of the afternoon lunar eclipse, May 26 (Vietnam time): – 15:47: A penumbral eclipse begins, the Moon enters the Earth’s penumbra and begins to decrease in brightness. – 4:44 pm: A partial lunar eclipse begins, the Moon enters the Earth’s shadow and gradually becomes partially obscured. – 18h18: The lunar eclipse is at its maximum, the Moon is located near the center of the shadow. – 6:25pm: The total lunar eclipse ended, the Moon began to emerge from the Earth’s shadow. – 6:35 pm: when the Moon rises from the horizon. – 19:52: The partial lunar eclipse ends, the Moon enters the Earth’s semi-dark region. – 20:49: The penumbral eclipse ends, the Moon comes out of the Earth’s penumbra.

Use a telescope to track the stars. Illustration: IT. Stay away from lights when observing the sky When using a telescope to observe the sky, determine for yourself reasonable objects and choose the right time and place to observe them. Strong light is the enemy of the astronomical observer. Therefore, stay away from city lights. If you are in the city, you can go to the quiet suburbs if possible. Otherwise, you should choose high positions and have a wide viewing angle to limit the effects of light pollution. Which objects are best for you to observe with amateur telescopes? Many young people after completing the telescope with their own hands feel disappointed. Because you have too much hope for a dream glasses without taking into account the reality factor. Remember, even the glasses that cost thousands of dollars that you order from the world’s leading manufacturers cannot allow you to see the colors shown in the photos taken on Google. Also, pay attention only to the brightest and most observable subjects. Which objects are the brightest? Except for the Moon, readers with basic knowledge of astronomy will think of Venus, Jupiter, Mars or Sirius – the brightest star after the planets in the system. However, Venus is not a good object to observe even though it is very bright. All you see is a yellow halo due to its thick and toxic atmosphere. Stars like Sirius, Canopus, although many times brighter than that, they are just distant balloons. It is not a reasonable target for observation through amateur optical telescopes. The best observed objects are the Moon first, followed by Jupiter, Saturn, Mars and a few galaxies, remarkable nebula. Don’t Observe When The Moon Is Full To observe the Moon, adjust the position of the eyepiece accordingly and aim at the vicinity of the semi-dark area during the nights between the 6th, 7th and 11th of the 12th lunar month. The full moon is a bad subject because it is so bright that it will obscure the craters and valleys you can see. You can solve this with a thin layer of glass called a moon filter, which will reduce the light of the Moon as it reaches your face. With industrial-grade telescopes, most have this. As for the homemade glasses, you can also design it yourself using a glass or a piece of blue plastic but still clear enough to see through it. Even so, the Moon should not be observed on full moon nights. Because in addition to it covering itself, it also obscures other attractive objects of observation, except, of course, on full moon days when the lunar eclipse occurs. You should have a map of the visible part of the Moon to compare when observing. These maps are now easy to find on the Internet and simply print out with any black and white printer. To observe the planets, it is best to choose the right time for good results. Planets have a different period than Earth, so they do not have a stable position like the distant star background. The easiest way is to use computer software to check the positions of the planets, or you can use free software downloaded at www.stellarium.org. Do not forget to set the exact location of the user and when you want to observe. It is advisable to choose days that are not full moons because the planets are in relatively high positions. Jupiter is the most observable object through amateur telescopes. Push your eyepiece a little deeper than when looking at the Moon and try to orient the lens because it will disappear instantly if you don’t keep your gaze exactly. Although it is not possible to see the colors as clearly as in the photos online that have been taken with exposure techniques, and through equipment thousands of times more modern than the amateur glasses you own, the colors Basic with brown lines, dark yellow is what you will see, and moreover the 4 Galilean satellites of this planet. Saturn is like Jupiter, just determine the right direction and fix the glass and you will easily observe it. The most interesting thing to look at this planet is its ring. However, it won’t be as colorful as you’re used to seeing in the photos, both the planet and the ring appear pale yellow. Next in the Solar System is Mars. But observing this planet is not very interesting because all you see is a faint red and maybe some black patches with faint ice caps at the poles if the telescope is relatively good. Anyway, this is the only planet in the Solar System that we can see some of its surface through amateur telescopes. One type of object that is very interesting to observe with amateur telescopes or, more neatly, tubes are bright galaxies and nebulae. Remember to push your eyepiece even further towards the objective so that you can observe the celestial bodies at infinity. The first notable is the Andromeda Galaxy (M31), a spiral galaxy. At a distance of nearly 3 million light-years, it emits light strong enough to be seen with the naked eye. Even with a small binocular you can see a band of light that seems to be a combination of countless small bright dots when directed towards it. What you see is billions and billions of suns like our own. Next is the Pleiades star cluster (M45), also known as the stellar group. It is also easy to recognize with the naked eye, it is a small group of 7 brightest stars located right in the constellation Taurus. Through binoculars or small telescopes, it can be clearly seen that it is a blue star cluster with many stars, including 7 brightest stars visible to the naked eye, so it is called the Seven Stars. This is an open cluster in the milky Way located 400 light-years from Earth. Another member you should look out for is the Orion Nebula (M42), an emission nebula with the same galaxy about 1,350 light-years from Earth. The Orion Nebula, although visible to the naked eye, is quite faint.

Part of Vietnam will see the total lunar eclipse, while the remaining areas will observe the partial lunar eclipse with a very high coverage rate. Vietnam can only see the latter stage of the phenomenon A lunar eclipse occurs when the Sun, Earth, and Moon are aligned (or nearly aligned) with the Earth in between. At this time, the Moon enters the shadow region behind the Earth and receives only a fraction of the light from the Sun than if it did not enter this region. For this reason, part or all of the Moon will be darker than usual and appear crimson. A lunar eclipse is a phenomenon that is not too rare and is easy to observe even without the aid of any instrument. Even so, it is still an interesting optical phenomenon and attracts many people’s attention. Particularly with the lunar eclipse that will take place at the end of May, many places in Vietnam will be able to track part of the total phase of the lunar eclipse. Therefore, this is indeed a remarkable phenomenon. Lunar eclipses are not uncommon, but observing the total phase is still something quite special. This lunar eclipse lasted for a total of more than 3 hours from the beginning to the end of the partial phase. If the semi-dark phase is included, the total duration of the phenomenon is more than 5 hours. However, because in the early phase of the lunar eclipse, in Vietnam, the Moon has not yet risen above the horizon. Therefore, observers in Vietnam can only observe the later stages of this phenomenon. Detailed schedule of the phenomenon in Vietnam time on May 26 specifically: Midnight lunar eclipse begins: 15:47; Partial lunar eclipse begins at 16:44; Full lunar eclipse starts at 18:11; Lunar eclipse at 18:18; Total lunar eclipse ends at 6:25 pm; The partial lunar eclipse ends at 19:52; The lunar eclipse ends at 20:49. In the Northern region The moon rises above the horizon at the end of the total phase. The observer can only track the partial phase of the phenomenon. For example, in Hanoi, the Moon rises at 6:29 pm on May 26. Thus, the observer can almost fully follow the later phase of a partial lunar eclipse from that point to its end. Sometime before 19:00 this partial phase was still very high coverage and very noticeable. In the Central and Southern regions Most of the central provinces will be able to track the last part of the total phase, while most of the southern provinces will be able to fully track the full phase if the viewing angle is wide enough to see the eastern horizon. For example, in Ho Chi Minh City, the Moon rises at 18:07, that is, before the total phase begins, so observers in this area as well as the surrounding areas can fully monitor the phase. totality. Although the total phase is visible in many areas, at that time the Moon is so low that it will be difficult to see in places where the view to the East is obstructed. The most favorable observation positions to monitor this period are places with a wide view to the East, areas without front shelters, roofs or windows of tall buildings, the coast… Notes to remember A lunar eclipse is completely harmless to your eyes, so you can look directly at it. You also don’t need specialized equipment like a telescope or binoculars to observe this phenomenon, although if you do, it will be a much more interesting view. Basically, there are two things to keep in mind with respect to observations: Weather is always important. If it is raining, stormy or cloudy, the phenomenon cannot be observed. Therefore, you need a cloudy sky. In general, as long as you see the Moon and it continues not to sink behind some cloud, you can observe a lunar eclipse. Choose a viewing spot so that you can see the eastern sky with as wide an angle as possible, avoiding artificial light (street lights, building lights) shining directly into your eyes from above. Another partial lunar eclipse that can be observed by observers in Vietnam will take place on November 19 of this year, but this May phenomenon is more noticeable because of its clear cover. Finally, a note on terminology, a lunar eclipse is a lunar eclipse, not a “blood moon” (an imprecise but popular term in the last few years). This is also a very normal optical phenomenon, not related to any spiritual or religious factors.

The study estimates that many bird species in Australia, such as the rainbow parrot, number in the millions. Photo: Guardian. The world has about 50 billion individuals of nearly 10,000 bird species, according to a new study that uses public scientific observations to estimate bird populations. Research published in Proceedings of the National Academy of Sciences (PNAS), led by scientists at the University of New South Wales (UNSW), shows that there are six times as many bird species on the planet as possible. human times. There are four species of birds that researchers call the “billion-person club,” with an estimated population greater than 1 billion individuals. These are house sparrows, European starlings, ring-billed gulls and swallows, found in many parts of the world. The researchers estimated the population of 9,700 species, based on hundreds of millions of bird observations recorded by birdwatchers on eBird, one of a number of community science projects on diversity. The world’s largest biome. They combined records with professional scientific observations to develop an algorithm that estimated the population numbers of most species. The team of scientists found that there are relatively few individuals of common bird species, but a large number of rare species. “They can be rare for natural reasons, as they really only live on one island,” said Associate Professor Will Cornwell, a UNSW ecologist and one of the lead scientists on the study. island or the top of a mountain, or they may be rare due to human causes.” Over time, he said, he hopes the models can chart which species are in decline and where conservation efforts are needed. Many bird species in Australia number into the millions such as the rainbow parrot (19 million individuals), the yellow cockatoo (10 million individuals) and the laughing kingfisher (3.4 million individuals). Mr. Sean Dooley, BirdLife Australia’s public affairs manager, is a longtime bird watcher and a contributor to community science programmes. The paper shows the value that people’s observations can contribute to scientific knowledge, he said. “This is a great first step to trying to discover what we have. It will be important if we can continue to do this over time, as we are witnessing a massive loss of wildlife. Research can help us do what is needed to get close to quantifying what’s going on.” By combining bird-watching records and professional monitoring of birds that are the subject of rigorous academic research, scientists have tweaked some of the things that have not been done, said Associate Professor Cornwell. certainly through public science. The model was then applied to birds that have not been studied professionally, he said. The figure of 50 billion birds represents the model’s average estimate for the total number of bird species worldwide. “The really big breakthrough in this study is that we can take the scientific data and the public science data and then fill in the gap for birds that are not expertly studied by scientists,” said Mr. Cornwell. research industry”. There is still some uncertainty in the figures, said Mr. Cornwell, and the researchers plan to refine the model as more professional studies of more species become available. He also said that the study revealed gaps in information due to the importance of scientific attention to birds in developed regions compared to developing countries of the world, and the need to It is necessary to refine global population estimates for all species. According to him, this also shows the role of public science in those efforts. Scientists will conduct another survey in the next few years.

Illustration. That could improve your chances of discovering organisms in distant worlds. How to find exoplanets Since 1999, a process of detecting exoplanets called the transit method has found thousands of other worlds by measuring the brightness of the stars that these planets orbit around. No one knows if these planets have any life, but if scientists observe the Earth using this method, they will probably detect signs of life. Once those signs are identified from Earth observations, experts can then find similar clues in the exoplanets. Scientists have recently described this approach as a mission called the Earth Transit Observer (ETO). This year, they presented this at the 52nd Moon and Planetary Science Conference. Most of the exoplanets we know of are found by transit, according to the US NASA Space Agency. Modern telescopes such as the Kepler Space Telescope and the Exoplanet Survey Satellite (TESS) can detect exoplanets when the path of a planet dims a star’s light overnight. slice. This is true even for stars thousands of light-years away. Scientists can estimate the magnitude of a planet based on the amount of light it is blocking and calculate the size of its orbit. The size and temperature of a host star as well as the distance between the planet and the star will provide additional clues as to whether exoplanets have life or not. The measure of transit can also hint at an exoplanet’s atmosphere. During a transit, a star’s light is filtered through atmospheric molecules. This could help researchers identify elements like oxygen and methane there. Such signs are often so small that astronomers need more transit observations to confirm the existence of these elements – according to a statement by the scientists. However, other factors on exoplanets and stars can affect the reading of molecules in the atmosphere. For example, planets change with the seasons, weather patterns and ocean currents. In addition, the activity of the Sun, such as the rise and fall of the solar wind, and the formation of solar storms also change. Any of these conditions can shape the behavior of the atmosphere, thus potentially affecting the proportion of molecules and elements in their atmosphere. Illustration. Finding “New Earth” Lead author Laura Mayorga of the planet-finding mission article in the Journal of Planetary Science says that, to understand those variables, “you need to know your stars as well as predict your planets. what do you look like ”. This can be a challenge when both the stars and the exoplanets are alien. “This is a very difficult problem,” says exoplanet astronomer at Johns Hopkins University’s Applied Physics Laboratory in Laurel Maryland (USA). Luckily, scientists already have all of those answers for a pair of inhabited planets and stars. That is our Earth and the Sun. For the ETO mission, a small satellite with a device capable of imaging near-violet to near-infrared light spectrum will observe the Earth as it passes in front of the Sun. The spectrophotometer will check for water and carbon dioxide markers as well as biological markers – oxygen and methane, ozone and methane. Besides, it is to point out the favorable conditions for life (of course, also to see if the signs are unique to Earth or not). The transit technique used in such an investigation would be similar to the technique used by the James Webb Space Telescope (JWST) to study some of the thousands of exoplanets, scientists say. know moving through their host stars ”. Since we all know the climate change on Earth and the patterns of the Sun’s activity, scientists can observe how they affect the reading of atmospheric molecules and then apply them to our observations. close to the “new Earth”. “The Solar System is the only place where we know all the answers. We can test our technique, point out limitations and make a connection between the results, ”said Mayorga in the statement -“ Then we can connect that with Unanswered observations from exoplanets ”. Scientists plan to submit the ETO proposal to NASA’s Astrophysical Pioneer Program in the fall of 2021.

People in the Eastern Hemisphere can observe Apophis without binoculars by 2029. Exclude from the risk Asteroid 99942 Apophis was discovered in 2004. Apophis was quickly identified as one of the most dangerous asteroids that can impact Earth. However, that impact rating changed as astronomers tracked Apophis and its orbit. Now, results from a new radar observation campaign combined with accurate orbital analysis have helped astronomers conclude that Apophis poses no risk of impacting our planet in the least. at most a century. About 340 meters across, Apophis is quickly known to be an asteroid that could pose a serious threat to Earth. At that time, astronomers predicted that this asteroid would come close to Earth by 2029. Thanks to additional observations of a near-Earth object (NEO), the risk of impact by 2029 has since been eliminated. The scientists then also ruled out the potential impact risk posed by another close approach in 2036. However, a small chance of impact by 2068 is thought to still exist. When Apophis moved away from Earth on March 5, astronomers had an opportunity to use the radar observations vigorously. As a result, it helps refine estimates of the orbits of asteroids around the Sun with extremely high accuracy. Thus, scientists can confidently eliminate all risks of collision by 2068 and much later. “An impact in 2068 is no longer in NASA,” said Davide Farnocchia of the Center for Near-Earth Objects Research (CNEOS) managed by NASA’s Jet Propulsion Laboratory (JPL) in Southern California (USA). possibilities could happen again. Our calculations do not show any risk of impact for at least the next 100 years ”. Mr. Farnocchia mentioned the Sentry Risk Impact Table. Maintained by CNEOS, this table holds information about some asteroids whose orbits bring them so close to Earth that the impact cannot be ruled out. With recent findings, the Risk Impact Table no longer includes Apophis. Optical telescopes and ground radars help characterize every orbit of objects near Earth. As a result, scientists can improve long-term risk assessment. CNEOS calculated a high-precision orbit to support NASA’s Planetary Defense Coordination Office. Apophis is no longer a threat to Earth. Opportunity to “follow” Apophis Apophis is the size of three soccer fields, weighing 27 million tons. If it collided with Earth, it would cause an explosion that was equivalent to 880 million tons of TNT. This power could destroy a country of mid-size. Its impact with the Earth will be 65,000 times stronger than the atomic bomb that once fell on the city of Hiroshima, Japan. The impact hole it left could be 518m deep. To achieve new Apophis calculations, astronomers used 70 m radio antennas at the Deep Space Network’s Goldstone Deep Space Communications Complex near Barstow, California. As a result, they were able to accurately track Apophis’ movements. “Apophis used to be close to Earth, but it still has nearly 10.6 million miles (17 million km) to go. Despite this, we were able to obtain extremely accurate information about the distance of Apophis with an accuracy of about 150 m. This campaign helps us eliminate the impact of risk and a great scientific opportunity, ”said JPL scientist Marina Brozovic – who led the radar campaign. Goldstone also partnered with the 100-meter-long Green Bank Telescope in West Virginia to allow Apophis to be photographed. Goldstone transmits while Green Bank receives – experiment that doubles the strength of the received signal. Although the Apophis radar image appears in pixels, the image has a resolution of 38.75 m per pixel. This is a remarkable resolution, considering whether the asteroid is 17 million kilometers away, or about 44 times the Earth-Moon distance. As the radar team analyzes more data, they also hope to learn more about the asteroid’s shape. Previous radar observations have shown that Apophis has a “double layer”, or peanut-like appearance. This is a relatively common shape among asteroids near Earth that are greater than 660 feet (200 m) in diameter. Astronomers are also working to better understand Apophis’ rotation speed and the asteroid axis orbit. On April 13, 2029, the Apophis asteroids will cross less than 20 thousand miles (32 thousand kilometers) from the surface to closer to Earth than the distance of geotechnical asynchronous satellites. On that close 2029 approach, terrestrial observers in the Eastern hemisphere could witness Apophis without the aid of a telescope or binoculars. This is also an unprecedented opportunity for astronomers to get a close-up look at a monument in the Solar System. In particular, now, Apophis is just a scientific curiosity, instead of a danger to our planet. “When I first started learning about asteroids after college, Apophis was a malformed child among dangerous asteroids,” said Mr. Farnocchia. There is a certain sense of satisfaction to see it removed from the list of risks. We are looking forward to knowledge that we can explore in its up-close by 2029 ”.

Super typhoon Surigae shot from Japanese satellite Himawari 8 at 8am on April 18. The strongest wind of a super typhoon reaches level 17 (200-220 km / h), jerking above level 17. Himawari 8 satellite recorded super typhoon activity in the last 4 hours. Himawari 8 is a Geostatic Weather Satellite (single-position fixed observation) operated by the Japan Meteorological Agency (JMA). This satellite, built by Mitsubishi Electric with the assistance of Boeing, was launched into orbit on October 7, 2014 with a cost of manufacturing about 800 million USD. Users can track images from satellite Himawari 8 via website himawari8.nict.go.jp. It is expected that by the evening of April 18, the super typhoon center is about 380 km east of the central coast of the Philippines. Wind power is unchanged from before. Super storm images updated live on website zoom.earth. This page synthesizes images from Himawari 8 satellite, X GOES data and Meteosat satellite chain. Super storm image at 8:20 am April 18. It is forecast that by the evening of April 19, the super typhoon center is about 280 km southeast of the central coast of the Philippines. The wind power now drops to level 16, recoil above level 17. The direction of super typhoon Surigae on windy.com. Users can download the application on the smartphone to monitor live weather, storms, if any. Image from satellite SAT24 shows the super typhoon about 400 km from the central Philippines. This is the first super typhoon this year to form in the Pacific Northwest. Experts say that even without going to the mainland, the super typhoon appeared in the area at this time is quite early.