In 2020, the astronomical phenomena will be staged from winter to sun, and folk integration will be staged from winter to sun?
The combination of Jupiter and Saturn in the winter solstice this year's 65438+February 2 1, that is, the winter solstice, the two largest planets in the solar system are Jupiter and Saturn, and they will meet in the winter solstice sky and stage a "civil combination". "Civil union" will only appear once every 20 years. It has never been so close before. This year is the closest year between the two stars in the past 800 years. 65438+February 2 1 is the winter solstice. On that day, Saturn joined Jupiter Seen from the earth, the two big planets are almost close together. This is a celestial phenomenon that will only happen in 20 years. The next such close combination will be1March 980 15. It is not easy to see this phenomenon. It is understood that Jupiter is the largest and fastest rotating planet among the eight planets in the solar system, and it is also the fifth farthest planet from the sun. Its mass is one thousandth of that of the sun and 2.5 times that of the other seven planets in the solar system combined. Because Jupiter, Saturn, Uranus and Neptune are all gas planets, these four planets are also collectively called woody planets (Jupiter and Saturn are collectively called gas planets). Jupiter is a giant gas planet. What humans usually see is the cloud top in the atmosphere, and the air pressure is slightly higher than 1 atmospheric pressure.
However, Saturn is also one of the eight planets in the solar system, and its distance from the sun ranks sixth in the solar system. Saturn is a gas giant planet. In ancient China, people called Saturn Ryuboshi, and in ancient Europe, it was called Saturn. Saturn is mainly composed of hydrogen, with a small amount of helium and trace elements. The core inside is composed of meteorites and ice, and the periphery is surrounded by several layers of metallic hydrogen and gas. The outermost atmosphere can be regarded as a luminous magnetic halo in appearance, although it sometimes exists for a long time. Saturn's wind speed is as high as 1800 km/h, which is obviously faster than Jupiter. Saturn's planetary magnetic field strength is between the earth and Jupiter, and the airflow is very fast. There is a quiet ice ring around Saturn, which is mainly composed of ice particles, a small amount of rocks and other ions. There are 82 confirmed Saturn satellites, among which Titan is the largest satellite in Saturn system and the second largest satellite in the solar system (with a radius of 2575Km) (the largest satellite in the solar system is Jupiter's Ganymede with a radius of 263 1Km). Astronomers found that the top of Saturn is an "unusual" hexagonal anticyclone by analyzing infrared images, which is incomparable in the solar system. Astronomers and scientists believe that this point is the highest temperature point on Saturn, and the temperature in other parts of Saturn is-185℃, while the temperature in this vortex is as high as-122℃. Until now, it is difficult for astronomical and scientific research groups to explain this surreal phenomenon.
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