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Astronomy
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Clues in this puzzle
Across
- The vast empty area beyond Earths atmosphere (5)
- The windy blue planet furthest from the sun (7)
- The space above the Earth where clouds and stars appear (3)
- The curved glass part of a telescope (4)
Down
- The only planet known to support life (5)
- The hottest planet in our solar system (5)
- The United States space agency (4)
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