Celestial Objects - Vocab

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Meteoroid

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A natural chunk of rock or dust existing outside Earth’s atmosphere.

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Satellite

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A natural or artificial body in orbit around a planet.

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Meteorite

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Remains of a meteoroid that strike the surface of a planet or moon.

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Comet

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A celestial body of ice, dust, and rock with an elongated and elliptical orbit.

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Inner Planets

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The planets closest to the Sun, including Mercury, Venus, Earth, and Mars.

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Outer Planets

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The planets Jupiter, Saturn, Uranus, and Neptune, whose orbits lie beyond the asteroid belt.

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Asteroid

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A small rocky body orbiting the Sun, primarily found in the asteroid belt between Mars and Jupiter.

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Star

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A massive celestial body composed of gas that emits light and heat from nuclear reactions in its core.

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Solar System

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The collection of the Sun and all celestial bodies that are bound to it by gravity, including planets, moons, asteroids, and comets.

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Gravity

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The force that attracts two bodies towards each other, essential for the orbits of celestial objects.