| 1-3 of 3Flashcard sets with a 'black hole' term meaning 'sometimes a supernova has a bigger mass than the sun and leaves behind an invisible black hole' | |||
|---|---|---|---|
| # | Title | Terms | Date |
| 1 | space science and ecologyby quizmaster5 | 78 terms | December 13, 2008 |
| 2 | Space sceince 4by quizmaster5 | 15 terms | December 12, 2008 |
| 3 | Science ecologyby Darksin101 | 78 terms | January 10, 2009 |