Across
- 2. a theory that our universe began with a primordial explosion some 13.7 billion years ago
- 5. group of stars that have regularly recognized positions
- 7. huge assemblage of stars, interstellar gas, and dust
- 8. what remains when a supergiant star collapses into itself
- 9. has been classifed as a dwarf planet
- 10. a meteoroid that strikes Earth's atmosphere
Down
- 1. Jupiter, Saturn, Uranus, Neptune
- 3. Mercury, Venus, Earth, Mars
- 4. occurs when the Moon's shadow falls on part of Earth
- 6. occurs when Earth's shadow falls on the moon