planet - an object that orbits the sun, has become rounded by its own gravity and has cleared the area of its orbit, asteroid - a small, mostly rocky or metallic body that orbits the sun in the inner solar system, meteor - a meteoroid that enters Earth’s atmosphere in a streak of light, Kuiper belt - a region beyond Neptune’s orbit extending 30 to 50 AU from the sun, astronomical unit - distance equal to the mean distance from the sun to Earth, or about 150,000,000 km, comet - a loose ball of ice and rock that usually has a long, narrow orbit around the sun, Oort cloud - the most distant part of our solar system, solar system - the sun, the planets, and a variety of other objects, sun - an average-sized star, composed of helium and hydrogen, at the center of the solar system, orbit - to travel in a curved path around something, moon - a natural object, or satellite, that orbits a planet, dwarf planet - an object that orbits the sun and has enough gravity to be round but has not cleared the area of its orbit, composition - what makes up an object or a material, inertia - the tendency of an object in motion to resist a change in motion unless acted upon by a force, habitable zone - an area around a star where it is neither too hot nor too cold for liquid water to exist on the surface of the planets within the area,

The Solar System 2024

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