Humans have only found about 5% of the composition of the universe. So what is the remaining 95%? Although we know of its existence, we cannot see or study it specifically, directly because these components are invisible. Science fiction still frequently mentions the existence of other universes. In fact, in recent years, the scientific community is gradually accepting this hypothesis. A typical example is the multiverse theory, which comes from William James’s term of the same name in 1895. Accordingly, it is said that there are many parallel universes along with the one in which we live. The origin of cosmic rays has puzzled astronomers for a long time, who have spent a century studying the origin of these charged particles. However, the origin of this mysterious phenomenon remains an unanswered question. Since the birth and development of space science, a question that has always bothered the whole human society is whether there is anyone outside of Earth? Humans have launched spacecraft, explored many planets in search of other life, but so far, the above question has not been answered. Life likely existed on Mars and may even exist today. Mars used to have vast oceans. Scientists have found evidence that liquid water is still periodically flowing on the surface of Mars. Many countries are planning to send explorers to Mars to find the answer tree to this problem. Solar physicists have been baffled by the mystery of the Sun’s ability as it reheats its corona, the fragile crown surrounded by light that emerges brightly during a total eclipse. Crystal rain is a mysterious phenomenon that can only be seen in the universe. The star HOPS-68 is a star that closely resembles the Sun at its inception. Around this star exists a cloud of dust and gas, of which the main component is green olivine crystals. Due to the rather cold temperature of these dust clouds (about -170 degrees Celsius), the olivine crystals condense into small particles and fall like a magically beautiful blue crystal rain. Black holes are one of the great mysteries of the universe. This entity is one where the density of matter is greater than any other entity in the universe. With its huge weight, the black hole can bend time and space and nothing can escape if it accidentally falls into its gravitational field. Astronomers estimate that the Sun will destroy the Earth in about 6 billion years. Several theories about the end of the universe have been put forward. The universe can perish when all matter in the universe has the same temperature. That means all stars will perish and all matter will perish. Another opinion is that an event contrary to the Big Bang, the Big Crunch, will occur. If the universe continues to expand, eventually gravity will become too great, causing everything to contract. The entire universe will become a solid mass and the universe will come to an end. There is a mystery about the moon that has puzzled astronomers for a long time. That’s why only certain parts of the moon’s surface appear to have magnetic fields. But after conducting many tests and analyzing the moon’s surface, scientists believe that the moon once had a magnetic field – about 450 million years ago. Femi bubbles are giant and mysterious structures that arise from the center of the Milky Way and span about 20,000 light-years, accompanied by intense gamma rays and X-rays. Since it was first discovered until now, the Fermi Bubble has caused astronomers around the world a headache because it has not been able to find the origin of this giant gamma-ray structure. Please watch the video: NASA astronauts drop a mirror in space. Source: VTV