The correct answer is satellite.
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Explanation:
You are viewing: Which Is Not Part Of Our Solar System
- The Sun and the celestial bodies which revolve around it form the solar system.
- It consists of large number of bodies such as planets, comets, asteroids and meteors.
- The gravitational attraction between the Sun and these objects keeps them revolving around it.
Satellite
- A satellite is any celestial body that revolves around another celestial body. Thus, the satellite is not a member of the solar system.
- Natural satellites and artificial satellites are the two types of satellites.
- For example, the Moon revolves around the Earth in a fixed orbit, so it is a satellite of the Earth. As a result, the Moon is an example of a natural satellite.
- A celestial body is said to be a satellite of another celestial body if and only if the other celestial body is a planet.
- For example, because the Moon revolves around the Earth and the Earth is a planet, the Moon is a satellite of the Earth.
- Although the earth is a satellite of the sun, it is more commonly referred to as a planet of the sun.
Asteroids
- Apart from the stars, planets and satellites, there are numerous tiny bodies which also move around the sun.
- These bodies are called asteroids.
- They are found between the orbits of Mars and Jupiter.
Meteors
- The small pieces of rocks which move around the sun are called meteoroids.
- Sometimes these meteoroids come near the earth and tend to drop upon it.
- During this process due to friction with the air they get heated up and burn.
- It causes a flash of light. Sometimes, a meteor without being completely burnt, falls on the earth and creates a hollow.
Comets
- Comets are also members of our solar system.
- They revolve around the Sun in highly elliptical orbits.
- However, their period of revolution round the Sun is usually very long. A Comet appears generally as a bright head with a long tail.
- The length of the tail grows in size as it approaches the sun.
- The tail of a comet is always directed away from the sun. Many comets are known to appear periodically.
- One such comet is Halley’s comet, which appears after nearly every 76 years. It was last seen in 1986.
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