Across
- 4. a _________ is an object with gravity so strong that nothing (not even light) can escape.
- 5. _______stars are about 62 million to 620 million miles in diameters.
- 6. This is the start of every stars life.
- 7. After a Redgiant explodes, some of the material left behind, may become a neutron star.
- 8. The path a low, medium, and high mass star take.
- 11. High mass stars quickly evolve into a brilliant ____________.
Down
- 1. A _________ is the blue-white core of a star that cools.
- 2. This is a contracting cloud of gas and dust with enough mass to form a star.
- 3. About 90% of stars in the Universe (including the sun) are ____________.
- 9. A ______ is the final stage of a low mass to medium star.
- 10. Astronomers think the sun began as a nebula that contains material from a ________.