Across
- 5. The line on which an object rotates
- 8. A series of space missions designed to send people to the moon
- 11. Life that originates outside Earth
- 14. A day when Earth's rotation axis is leaning along Earth's orbit
- 15. Reusable spacecraft that transport people and materials to and from space
Down
- 1. A day when Earth's rotation axis is the most toward or away from the Sun
- 2. The large, dark, flat areas on the Moon
- 3. The study of life in the universe, including life on Earth
- 4. Any small object that orbits a larger object
- 6. A spinning motion
- 7. Uncrewed spacecraft sent from Earth to explore objects in space
- 9. The motion of one object around another object
- 10. The path an object follows as it moves around another object
- 12. A vehicle designed to propel itself by ejecting exhaust from one end
- 13. Anything related to the moon