What are the highlights of the combination of civil and wood?
What is the reason for the conjunction of Jupiter and Saturn on the winter solstice?
On December 21 this year, which is the winter solstice, the two largest planets in the solar system, Jupiter and Saturn, will meet in the sky. , staged "the combination of civil and wood". The "Conjunction between Civil and Jupiter" only occurs once every 20 years, and this year is the closest the two stars have been in the past 800 years.
December 21, the winter solstice. On that day, Saturn conjunct Jupiter, and when viewed from the Earth, the two giant planets were almost "touching" each other. This is a celestial phenomenon that only occurs once every 20 years. The next time such a close conjunction will occur will be on March 15, 2080. This observation opportunity is rare.
It is understood that Jupiter is the largest and fastest-rotating planet among the eight planets in the solar system, and the fifth planet from the sun. Its mass is one thousandth that of the sun and 2.5 times the combined mass of the other seven planets in the solar system. Since Jupiter, Saturn, Uranus, and Neptune are all gas planets, the four are collectively called the Jupiter-like planets (Jupiter and Saturn are collectively called the gas planets). Jupiter is a gas giant planet. What humans usually see are the tops of clouds in the atmosphere, where the pressure is slightly higher than 1 atmosphere.
Saturn is also one of the eight planets in the solar system, ranking sixth in the solar system in distance from the sun. Saturn is a gas giant planet. Ancient Chinese people called Saturn the imperial star, and ancient European Greeks called it Saturn.
Saturn is mainly composed of hydrogen, with a small amount of helium and trace elements. The inner core includes meteorites and ice, and the outer periphery is wrapped by several layers of metallic hydrogen and gas. A bright magnetic halo can be seen in the outermost atmosphere, although it sometimes exists for a long time. Saturn's wind speed is as high as 1800 kilometers per hour, which is obviously faster than the wind speed on Jupiter. The strength of Saturn's planetary magnetic field Between the Earth and Jupiter, the air flow is very fast. There is a quiet ice ring on the periphery of Saturn. The main components are ice particles and a smaller amount of rocks and plasma. There are 82 confirmed satellites of Saturn. Among them, Titan is the largest satellite in the Saturn system and the second largest satellite in the solar system (radius 2575Km) (the largest satellite in the solar system is Jupiter's Ganymede, with a radius of 2631Km). Astronomers discovered Saturn by analyzing infrared images At the top is an "unusual" hexagonal anticyclone, a phenomenon without parallel in the solar system. Astronomers and scientists believe that this point is the hottest point on Saturn. The temperature elsewhere on Saturn is -185°C, and the temperature at this vortex is as high as -122°C. Astronomy and scientific research teams are still unable to explain this phenomenon that transcends modern times and ancient times.