as·tron·o·my
 astronomy
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- pronunciation:
stra
n
mi
- features:
- Word History, Word Explorer, Word Parts
| part of speech: |
noun |
| definition: |
Astronomy is the science that studies things that are out in space, like the sun, the moon, other planets, and stars.
When I look at the sky on a clear night, I think I would like to study astronomy someday. |
The word
astronomy comes from
astronomos, an ancient Greek word that means "one who arranges the stars."