Across
- 3. stars Size of cities
- 4. 452 B Also known as Earth 2.0
- 7. flare Sudden burst of energy on the surface of the sun
- 8. hole Sucks everything in it's way
Down
- 1. Planet which is made of the same things the sun is made of
- 2. time It warps around a black hole
- 5. forth state of matter
- 6. Planet humans are terraforming to