Across
- 4. A thing in space where the matter is very packed and gravitational force is very high.
- 6. white ___ are one of the final stages of a low-mass star.
- 7. ____ are the types of clouds that create new stars.
Down
- 1. What element do stars use to allow the nuclear fusion process.
- 2. Rounded up, what is the age (in billions) of our universe?
- 3. _____ stars have a very large mass.
- 5. A Red SuperGiant is an aging star that consumed its hydrogen ___ supply.