Across
- 7. The path an object takes as it revolves around another in space.
- 9. Vehicle designed to travel in outer space propelled by engines.
- 11. Term used to describe potential extraterrestrial life forms.
- 12. Instrument used to observe distant objects in space.
- 13. Relating to the Moon or its characteristics.
- 15. Small icy body that develops a bright tail when near the Sun.
- 16. The act of traveling and investigating new places.
- 18. Trained individual who travels and works in space.
- 20. Name of the NASA program that sent humans to the Moon.
Down
- 1. Uncrewed vehicle designed to explore the surface of a planet.
- 2. A cloud of gas and dust in space where new stars are born.
- 3. Uncrewed spacecraft sent to gather data in space.
- 4. A planet that orbits a star outside our solar system.
- 5. Occurring or situated between stars.
- 6. Artificial object placed in orbit around a celestial body.
- 8. Abbreviation for the International Space Station.
- 10. Russian term for a person who travels in space.
- 14. The fourth planet from the Sun, often targeted for exploration.
- 17. Vast system of stars, gas, and dust bound by gravity.
- 19. Relating to the Sun or the Sun's energy.