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Unit 1 Part 1 Cont.

Unit 1 Part 1 Continued- My Place in Space

TermDefinition
Universe Everything that exists in space, including all matter and energy. It includes planets, stars, galaxies, light, and you!
Galaxy a large collection of stars, gas, and dust held together by gravity. These can contain billions of stars.
Milky Way Galaxy Our solar system is located in this galaxy. It is a spiral galaxy. Our sun is located in a partial spiral arm of the galaxy, near the edge. There are over 200 BILLION stars in this galaxy.
Solar System A collection of large bodies (planets) and small bodies (moons, dwarf planets, comets, asteroids, and meteoroids) that orbit our only star, the sun.
Planet A spherical object that orbits/revolves around the sun.
Light-year The distance light travels in one year. These are used to measure distances in space outside of our solar system. (light travels 186,000 miles/sec which is equal to 6 trillion miles in one year. )
Created by: user-1713485
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