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space vocab #1
Question | Answer |
---|---|
what is the Solar system? | the solar system is the collection of large and small bodies that orbit our central star the sun. |
what is a planet? | a planet is a spherical body that orbits in the solar system. |
what is a star? | a star is a large celestial body that is composed of gas and emits light |
what is a galaxy? | a galaxy is a large collection of stars gas and dust that is held together by gravity. |
what is a light year? | is the distance that light travels through space in 1 year. |
what is a universe? | the universe can be defined as space and all the matter and energy in it however this definition does not tell us about the structure of the universe. |