Across
- 2. a huge collection of stars and their solar systems
- 4. the condition where gravity is very slight
- 6. a vehicle that lands on the surface of another celestial body
- 7. a space mission where the spacecraft passes close to a planet but doesn't land
- 10. any planet outside our solar system
- 11. the loose rock and dust on top of a layer of bedrock
- 12. a metal that is made of two or more elements
- 14. a place that has the elements needed to sustain life
Down
- 1. the weight that a vehicle must carry
- 3. small rocky objects that orbit a star
- 5. the curved path of a satellite around a celestial body
- 8. of or related to a moon
- 9. a group of stars which often look like a particular shape
- 13. any object that moves around a larger object