Celestial Objects Definitions
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Transcript of Celestial Objects Definitions
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CELESTIAL OBJECTS DEFINITIONS
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Asteroid
Chunks of space rock that orbit the Sun, mostly between Mars and Jupiter
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Comet
A small body of ice, rock, and cosmic dust
Example: Halley’s Comet
There are thousands of these in the solar system.
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Galaxy
A huge collection of millions or billions of stars.
Example: The Milky Way
Galaxy & the Andromeda Galaxy
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Meteor
Dust and rock fragments from space that enter the Earth’s atmosphere and burn up (shooting stars)
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Star
A large ball of gas and plasma that produces light
Example: The Sun & Polaris (the North Star)
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Planet
A large, spherical object orbiting a star that dominates its orbit.
Example: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
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Satellite
Anything that orbits a planet, such as a moon or a man-made object (like the hubble telescope)
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Solar system
The sun and all the other objects that orbit around it; planets, asteroids, comets, moons…
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Star and the Sun
A gigantic spinnin ball of hot, glowing gas in space
Sun: the star at the center of our solar system!
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Universe
The vast space which includes EVERYTHING that exists!
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Black Hole
An object whose surface gravity is so great that waves traveling at the speed of light cannot escape from it.
http://www.youtube.com/watch?v=eI9CvipHl_c
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Nebula
A huge cloud of gas and dust in space
Example: These are either remnants or dead stars or birthplace of new stars
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Dwarf Planet
A Large, spherical object orbiting a star that does not dominate its orbit.
Example: Pluto, Eris, Ceres, Make Make Haumea
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MAY THE FORCE BE WITH YOU…