Across
- 2. is what remains when a supergiant star collapses into itself.
- 4. of a nebula becomes a protostar.
- 7. diagram is a graph of intrinsic brightness versus surface temperature for stars.
- 10. are groups of stars that have regularly recognized positions.
Down
- 1. indicates a star's temperature.
- 3. begins as a nebula, which is a cloud of gas and dust.
- 5. is a well-known constellation
- 6. is a remnant of a supernova.
- 8. stars become Super Giants
- 9. cools for eons until it is too cold to emit light.