Across
- 1. hole is what remains when a supergiant star collapses into itself.
- 3. four largest moons.
- 5. is complete or partial obscuring of a celestial body by another.
- 9. is an enormous cloud of dust and gas occupying space.
- 10. is a hypothesis that is supported by the results of experimentation.
Down
- 2. is small, rocky objects that orbit the Sun.
- 4. is a huge assemblage of stars.
- 6. is frozen leftovers from the formation of the solar system.
- 7. system is a collection of eight planets and their moons in orbit around the sun.
- 8. is composed of mostly hydrogen.