Across
- 2. the____is hot
- 4. 93 billion____years
- 6. what comet wont pass intil 2061
- 7. The largest known________is 965 km (600 mi) wide.
Down
- 1. the was once a piece of the Earth
- 2. space_____cost 12m
- 3. Andromeda Galaxy is approaching the
- 5. Astronomers have found a massive water vapor cloud which holds 140 trillion times the mass of