What are the common stars and planets?

The common star is the sun, and the common planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

1, sun

The sun is the central celestial body of the solar system, accounting for 99.86% of the total mass of the solar system. The eight planets, asteroids, meteors, comets, exoneptune objects and interstellar dust in the solar system all revolve around the sun, and the sun revolves around the center of the Milky Way.

2. Mercury

Mercury (English: Mercury, Latin: Mercury) is the innermost and smallest of the eight planets in the solar system and the closest planet to the sun. China, known as Chen Xing, has the largest orbital eccentricity among the eight planets. It orbits the sun once every 87.968 Earth Days and rotates once every 2.0 1 for 3 times.

3. Venus

Venus, one of the eight planets in the solar system, is the second planet in the distance sequence from the sun, with a distance of 0.725 astronomical unit. It is the closest planet to the earth (Mars is sometimes closer). The ancient Romans called it Venus, China called it Chang Geng, Qi Ming, Taibai or Taibai Venus, and Aphrodite in ancient Greek mythology. Period of revolution is 224.7438+0 Earth Day.

4. Earth

The earth is one of the eight planets in the solar system, ranking third in the order from near to far from the sun. It is also the earth-like planet with the largest diameter, mass and density in the solar system, with a distance of1.500 million kilometers from the sun. The earth rotates from west to east and revolves around the sun at the same time. At present, there is a natural satellite-the moon, which forms a celestial system-the earth-moon system. It originated from the primitive solar nebula 4.6 billion years ago.

5. Mars

Mars is one of the eight planets in the solar system and the fourth planet in the solar system from the inside out. It is a terrestrial planet, with a diameter of about 53% of the Earth's and a mass of 1 1% of the Earth's. Due to the axial tilt, the rotation period is similar to that of the earth, and one circle is about twice that of the earth. The orange appearance is the surface hematite (iron oxide). In China's ancient books, Mars was called "the twinkling star", while in ancient western countries (ancient Rome) it was called "the star in the myth of Mars".

6. Jupiter

Jupiter is the largest and fastest rotating planet among the eight planets in the solar system, and the fifth planet from the inside out. 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. Jupiter, Saturn, Uranus and Neptune are all gaseous planets, so they are also collectively called woody planets (Jupiter and Saturn are collectively called gaseous giants).

Jupiter is a gas giant planet, accounting for 70% of all planets in the solar system. The main component is hydrogen, followed by helium, accounting for 25% of the total mass. The core contains other heavier elements. What humans usually see is the cloud top in the atmosphere, and the air pressure is slightly higher than 1 atmospheric pressure.

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