Across
- 3. A space where there is no matter or air.
- 5. A small piece of rock or metal traveling through space.
- 7. Tiny bits of matter that stars are made of, or what's left after they die.
- 8. A very powerful explosion of a dying star.
- 10. A star that suddenly becomes much brighter.
- 12. A sudden burst of energy from our central star.
- 13. Changing another world to make it more like our home world.
- 14. The vast emptiness beyond our world's air.
Down
- 1. Another name for a small, rocky body orbiting a star, like an asteroid.
- 2. Something having to do with a world's orbiting natural satellite.
- 4. The feeling of having no weight, common in a vast emptiness.
- 6. A building with a large telescope for looking at space.
- 8. A vehicle that takes people and cargo into orbit and back.
- 9. A vehicle designed for travel in a vast emptiness.
- 11. A vehicle designed to explore the surface of another world.