<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	
	xmlns:georss="http://www.georss.org/georss"
	xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
	>

<channel>
	<title>DC 9 &#8211; Spress</title>
	<atom:link href="https://en.spress.net/tag/dc-9/feed/" rel="self" type="application/rss+xml" />
	<link>https://en.spress.net</link>
	<description>Spress is a general newspaper in English which is updated 24 hours a day.</description>
	<lastBuildDate>Sun, 18 Apr 2021 16:20:10 +0000</lastBuildDate>
	<language>en-US</language>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	
<site xmlns="com-wordpress:feed-additions:1">191965906</site>	<item>
		<title>How long does it take to walk around the Moon?</title>
		<link>https://en.spress.net/how-long-does-it-take-to-walk-around-the-moon-2/</link>
		
		<dc:creator><![CDATA[Phúc Thịnh]]></dc:creator>
		<pubDate>Sun, 18 Apr 2021 16:20:10 +0000</pubDate>
				<category><![CDATA[Science]]></category>
		<category><![CDATA[Alan Shepard]]></category>
		<category><![CDATA[Apollo]]></category>
		<category><![CDATA[Around]]></category>
		<category><![CDATA[Astronaut of the universe]]></category>
		<category><![CDATA[DC 9]]></category>
		<category><![CDATA[FLARE]]></category>
		<category><![CDATA[Golf ball]]></category>
		<category><![CDATA[Gravitation]]></category>
		<category><![CDATA[Gravity]]></category>
		<category><![CDATA[long]]></category>
		<category><![CDATA[Moon]]></category>
		<category><![CDATA[Moon cycle]]></category>
		<category><![CDATA[Nasa]]></category>
		<category><![CDATA[Perimeter]]></category>
		<category><![CDATA[ROVER]]></category>
		<category><![CDATA[Supplies]]></category>
		<category><![CDATA[Swing arm]]></category>
		<category><![CDATA[Tee]]></category>
		<category><![CDATA[The carbonate]]></category>
		<category><![CDATA[Topographic]]></category>
		<category><![CDATA[Walk]]></category>
		<guid isPermaLink="false">https://en.spress.net/how-long-does-it-take-to-walk-around-the-moon-2/</guid>

					<description><![CDATA[The answer depends on many factors such as travel speed, time traveled per day and route to avoid dangerous terrain. Twelve people set foot on the Moon during the Apollo mission from 1969-1972. Documentary footage shows that traveling &#8211; more precisely, jumping &#8211; on a planet with only one-sixth of Earth&#8217;s gravity is quite interesting. [&#8230;]]]></description>
										<content:encoded><![CDATA[<p><strong>The answer depends on many factors such as travel speed, time traveled per day and route to avoid dangerous terrain.</strong><br />
<span id="more-4361"></span> Twelve people set foot on the Moon during the Apollo mission from 1969-1972. Documentary footage shows that traveling &#8211; more precisely, jumping &#8211; on a planet with only one-sixth of Earth&#8217;s gravity is quite interesting.</p>
<p> However, research by the US Aerospace Agency (NASA) shows that humans can travel on the Moon at a faster speed than the astronauts on the Apollo. Theoretically, the time it takes to walk around the Moon is shorter than previously estimated. During the Apollo mission, astronauts &#8220;jump&#8221; on the Moon at a speed of about 2.2 km / h. According to NASA, this speed is quite slow due to the bulky astronaut suit, containing the pressure. If wearing a more comfortable outfit, the movement will be easy and maximum speed can be reached. <img fifu-featured="1" decoding="async" loading="lazy" src="https://photo-baomoi.zadn.vn/w700_r1/2021_04_05_119_38426125/90fcc9f9e4bb0de554aa.jpg" width="625" height="351"> <em> Humans can walk on the Moon at a faster speed than astronauts during the Apollo mission. Photo: Shutterstock. </em> <strong> Maximum walking speed on the Moon</strong> A 2014 NASA study, posted above <em> Journal of Experimental Biology</em> (<em> Journal of Experimental Biology</em> ) tested human walking and running speeds in a simulated environment for the Moon&#8217;s gravity. According to the <em> Live Science</em> The team invited 8 people (including 3 astronauts) to use the treadmill on the DC-9 jet. The aircraft is piloted in a special parabolic trajectory, simulating gravity on the Moon for up to 20 seconds. Test results show that participants can walk at up to 5 km / h before running. Not only double the speed of the Apollo astronaut, the figure is almost equal to the average maximum walking speed of humans on Earth (7.2 km / h). The above speed is achieved because participants can walk while swinging their arms. This movement creates a downward force, compensating for the lack of gravity. One of the reasons astronauts on the Moon move slowly is not being able to swing their arms due to the tight suit. <img decoding="async" loading="lazy" class="lazy-img" src="https://photo-baomoi.zadn.vn/w700_r1/2021_04_05_119_38426125/05095f0c724e9b10c25f.jpg" width="625" height="351"> <em> The footprints of astronaut Neil Armstrong on the Moon. Photo: NASA. </em> If you apply the top speed above (5 km / h), it will take approximately 91 days to walk around the 10,921 km circumference of the Moon. Meanwhile, it takes 334 days to go continuously all the circumference of the Earth (40,075 km). Of course, that can&#8217;t happen because the Earth has an ocean. The same applies on the Moon as well. 91 days is just a number under ideal conditions. In fact, it will take longer to walk around the moon. <strong> Determine the roadmap and influencing factors</strong> Aidan Cowley, scientific advisor to the European Space Agency, says walking around the Moon is a possible task, but &#8220;too weird to be helped.&#8221; According to him, one of the biggest challenges is supplies such as water, food and oxygen. &#8220;I don&#8217;t think you would put them in your backpack because the masses are so great, even in environments with a gravity of 1/6 (compared to the Earth),&#8221; said Cowley, we need a support vehicle, also. is a shelter. “Many agencies are looking at the idea of ​​a pressurized rover, which will assist astronauts on exploration missions. They look like mobile bases, to store supplies and sleep at night, ”says Cowley. Adventurers also need suits that are optimal for mobility. Astronaut clothing is not currently designed for vigorous activity, but some agencies are developing suits that fit better, allowing wearers to freely swing their arms while walking on the Moon. <img decoding="async" loading="lazy" class="lazy-img" src="https://photo-baomoi.zadn.vn/w700_r1/2021_04_05_119_38426125/b989ee8cc3ce2a9073df.jpg" width="625" height="351"> <em> Scientist, astronaut Harrison H. Schmitt was traveling on the Moon, during the Apollo 17 mission in 1972. Photo: NASA. </em> The rugged terrain on the Moon makes it difficult to find the right route, especially the craters many kilometers deep. Light and temperature are also two factors to note. &#8220;At the equator (of the Moon), during the day the temperature goes up about 100 degrees Celsius. By night, it drops to -180 degrees C,&#8221; Cowley said. The lunar cycle leaves some days with very little, or no sunlight. Therefore, at least half of the journey will take place in the dark. The temperature problem can be solved with rovers and clothing, but it also alters the regolith state &#8211; the fine gray soil that covers the lunar background &#8211; affects movement speed. Solar radiation is an important issue. Unlike the Earth, the Moon does not have a magnetic field that deflects radiation. &#8220;If the Sun emits a solar flare or releases aurora material (CME), your state will be very bad if your body is affected by the Sun&#8217;s high radiation,&#8221; said Cowley. <img decoding="async" loading="lazy" class="lazy-img" src="https://photo-baomoi.zadn.vn/w700_r1/2021_04_05_119_38426125/a2e3f3e6dea437fa6eb5.jpg" width="625" height="468"> <em> The circumference of the Moon is 10,921 km. Photo: NASA. </em> The final element of the quest is fitness. Participants need long-term exercise in conditions of low gravity, so that the heart and muscles adapt. Even when everything is ideal, one person can only walk at full speed for 3-4 hours / day. If you maintain a speed of 5 km / h for 4 hours / day, it will take you 547 days (nearly 1.5 years) to walk around the circumference of the Moon, in the condition of the road without a crater, no Affected by changes in temperature or solar radiation. Cowley thinks humans won&#8217;t have the technology or equipment for this task, at least until the 2030s or 2040s. “No agency will support such missions. But if some crazy billionaire wants to try, they&#8217;ll shake hands, ”Cowley said. <em> <strong> Astronaut Alan Shepard plays golf on the Moon</strong> </em> <em> Live broadcast from the lunar surface on February 6, 1971, astronaut Alan Shepard said the golf ball was flying kilometers away.</em></p>
]]></content:encoded>
					
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">4361</post-id>	</item>
		<item>
		<title>How long does it take to walk around the moon?</title>
		<link>https://en.spress.net/how-long-does-it-take-to-walk-around-the-moon/</link>
		
		<dc:creator><![CDATA[HàThu]]></dc:creator>
		<pubDate>Sun, 18 Apr 2021 06:33:14 +0000</pubDate>
				<category><![CDATA[Science]]></category>
		<category><![CDATA[Aidan Cowley]]></category>
		<category><![CDATA[Apollo]]></category>
		<category><![CDATA[Around]]></category>
		<category><![CDATA[Astronaut of the universe]]></category>
		<category><![CDATA[Circle]]></category>
		<category><![CDATA[DC 9]]></category>
		<category><![CDATA[Earth]]></category>
		<category><![CDATA[Gravitation]]></category>
		<category><![CDATA[Gravity]]></category>
		<category><![CDATA[long]]></category>
		<category><![CDATA[Long road]]></category>
		<category><![CDATA[Mile]]></category>
		<category><![CDATA[Moon]]></category>
		<category><![CDATA[Nasa]]></category>
		<category><![CDATA[Perimeter]]></category>
		<category><![CDATA[Replay]]></category>
		<category><![CDATA[Suit]]></category>
		<category><![CDATA[The carbonate]]></category>
		<category><![CDATA[The pendulum]]></category>
		<category><![CDATA[The universe]]></category>
		<category><![CDATA[Walk]]></category>
		<guid isPermaLink="false">https://en.spress.net/how-long-does-it-take-to-walk-around-the-moon/</guid>

					<description><![CDATA[From our vantage point on Earth, we can see that the moon is quite small. But if you boarded a spaceship, put on a space suit and went on a epic moon hike, how long would it take you to walk all the way around it? Twelve astronauts have already set foot on the Moon. [&#8230;]]]></description>
										<content:encoded><![CDATA[<p><strong>From our vantage point on Earth, we can see that the moon is quite small. But if you boarded a spaceship, put on a space suit and went on a epic moon hike, how long would it take you to walk all the way around it?</strong><br />
<span id="more-4205"></span> <img fifu-featured="1" decoding="async" loading="lazy" src="https://photo-baomoi.zadn.vn/w700_r1/2021_04_06_20_38437314/cdd7cc58e21a0b44520b.jpg" width="625" height="350"> </p>
<p> <em> Twelve astronauts have already set foot on the Moon.</em> The answer depends on a multitude of factors, including how fast you go, how long will you walk each day, and which detours you need to take to avoid dangerous terrain. Such a trip around the moon might take more than a year, but in reality, there are many challenges to overcome. According to NASA, a total of 12 people have ever set foot on the lunar surface, all of which were part of the Apollo missions from 1969 to 1972. Screened Earth footage shows walking around in the low-gravity region of the Moon, equal to 1/6 of the Earth&#8217;s gravity. However, research from NASA shows that humans can travel on the moon much faster than the astronauts aboard the Apollo. Theoretically, walking the circumference of the moon could be done faster than previously predicted. During Apollo missions, astronauts circled the surface at a normal speed of 1.4 miles per hour (2.2 km / h). This slow pace is mainly due to their bulky, pressurized space suit not designed for mobility. If moon hikers wore nicer sportswear, they might find it a lot easier to move. In 2014, a NASA study published in the Journal of Experimental Biology tested the speed at which people can walk and run in simulated lunar gravity. To do this, the team invited eight participants (3 of which are astronauts) to use the treadmill on the DC-9, which travels in a special parabolic trajectory on Earth to model it. simulates gravity on the moon for up to 20 seconds. This experiment showed that participants were able to walk up to 3.1 miles / hour (5 km / h) before starting to run. According to the researchers, this figure is not only more than twice the walking speed that the Apollo astronauts have, but also quite close to the average maximum walking speed of 4.5 mph (7.2 km / h) on Earth. The participants slowed this down because they could swing their arms freely, similar to the way humans run on Earth. The pendulum&#8217;s movement creates a downward force, which partially compensates for the lack of gravity. One of the reasons the Apollo astronauts move so slowly on the surface of the Moon is because they cannot do this correctly due to their tight suits. At this new hypothetical top speed, it would take about 91 days to walk 6,786 miles (10,921 km) of the moon. Meanwhile, it would take approximately 334 days to walk non-stop (i.e., don&#8217;t stop to sleep or eat) around Earth&#8217;s 24,901 miles (40,075 km) circumference at this rate, though it is impossible to do so. . Obviously, 91 days of continuous walking is not possible, so the actual hike around the moon will take longer. Walking around the moon poses a number of different challenges. &#8220;I think logically, that can be done,&#8221; said Aidan Cowley, a scientific advisor at the European Space Agency. But it will be a very strange task to assist. &#8221; One of the biggest challenges is carrying supplies, such as water, food, and oxygen. &#8220;I don&#8217;t think you&#8217;ll bring them in a backpack,&#8221; said Cowley. &#8220;Because that would be too much mass even if you were at 1/6 gravity. Therefore, you would need to have a support vehicle with you. This vehicle could also act as a shelter. hidden. &#8221; &#8220;A lot of agencies are looking at the concept of having a pressurized aircraft, which can assist astronauts when they are on expeditionary missions, like portable mini bases,&#8221; Cowley said. You can use it to go at night and resupply, then go back during the day and go around. &#8221; Moon explorers will also need a space suit with a design that allows for optimal mobility. The current space suits have yet to be created for the purpose of over-maneuvering, Cowley said, but some agencies are developing suits that fit properly to walk on the moon. &#8220;The moon&#8217;s harsh topography will also make finding a suitable path around it quite complicated, especially with a meteor crater that can be several miles deep,&#8221; Cowley added. You really want to go around craters. This is too dangerous. &#8221; In addition, you will also have to take into account the lighting and temperatures when planning your route. Because, at the equator of the moon and during the day, the temperature is about 100 degrees Celsius. And then at night the temperature drops to minus 180 degrees Celsius.</p>
]]></content:encoded>
					
		
		
		<post-id xmlns="com-wordpress:feed-additions:1">4205</post-id>	</item>
	</channel>
</rss>