What are planets and stars? Does the moon belong to a star or a planet?

1. There are eight planets in the solar system, namely: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

1, mercury

It is a planet similar to the earth. Because it is close to the sun, it will only appear in the form of morning star in the morning, or in the form of evening star. Mercury is usually invisible in the sun unless there is a solar eclipse.

2. Venus

The brightness in the night sky is second only to the moon, and Venus will reach its maximum brightness before sunrise or after sunset. It appears in the eastern sky in the morning and is called "Qi Ming". Dusk is in the west of the sky, which is called Chang Geng.

3. Earth

One of the eight planets in the solar system, ranking third in the order from near to far from the sun, is also the largest terrestrial planet in the solar system in diameter, mass and density.

4. Mars

Mars is the fourth planet in the solar system from the inside out, belonging to the earth-like planet. Its diameter is about half that of the earth, and it takes twice as long to make a revolution tilted from the axis with a similar rotation period. The West calls it Mars Mythology Star, God of War and China call it Fluorescent Star, because it is as bright as fire, and its position and brightness often change.

5. Jupiter

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).

2. Stars can shine by themselves, such as the sun, Vega, Sirius, proxima centauri, the old man and arcturus.

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. Low humidity plain

It is the brightest star in Lyra, ranking fifth in the night sky and the second brightest star in the northern hemisphere, second only to arcturus. Vega is the first star photographed by human beings outside the sun and the first star with spectral records.

3. Sirius Also known as DOG STAR

It is the brightest star except the sun in the whole day, but it is darker than Venus and Jupiter and brighter than Mars most of the time. Sirius generally refers to Sirius a and Sirius B.

4. proxima centauri

It was discovered by South African astronomer Robert Inniss in 19 15, when he was the director of the Johannesburg Joint Observatory.

5. Old Star

The brightness is the second brightest star in the whole day, second only to Sirius. The origin of western Santa Claus. In the east, it is called the Antarctic fairy. Kind-hearted, there is also a saying of longevity, but it is not the life of the owner.

Third, the moon is a planet. Planets can't shine by themselves, such as the eight planets in the solar system. The light of the moon reflects sunlight, so the moon is a planet.

References:

Baidu encyclopedia _ star Baidu encyclopedia _ planet