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Vocab 12
Term | Definition |
---|---|
comet | a ball of ice and dirt that orbits the Sun |
meteor | a small rock that burns as it enters Earth's atmosphere |
asteroid | a large rock in outer space |
telescope | a tool used for observing distant objects |
mass | the amount of matter in an object |
weight | the measure of the pull of gravity on an object |
astronomer | a scientist who studies things in outer space |
galaxy | a grouping of stars |
lunar eclipse | when the moon moves through the shadow of the Earth |
solar eclipse | when the moon makes a shadow on Earth |