Across
- 2. Biggest explosion humans has ever seen
- 3. Neil Armstrong is the commander of _______
- 4. large objects made of dust and ice
- 6. A dwarf planet that was scientists thought was a planet
- 8. opportunity’s twin
Down
- 1. has an event horizon
- 5. spirit’s twin
- 7. A dwarf planet that was first spotted in 1801