Across
- 4. a scientist who studies astronomy
- 5. a contracting cloud of gas and dust with enough mass to form a star
- 7. when a supergiant runs out of fuel an explosion happens, what is the explosion called?
- 9. the blue-white core of the star that is left behind cools
- 10. little green men
Down
- 1. an object with gravity so strong nothing, not even light can escape
- 2. spinning neutron stars
- 3. the remains of high mass stars
- 6. begins as a nebula and ends as a white/black dwarf, neutron stars, or a black hole
- 8. a large cloud of gas and dust spread out in an immense volume