| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Astronomers classify these clusters of stars as elliptical, lenticular, irregular or spiral | galaxies | $400 | DJ | TOUGH SCIENCE | 2007-02-23 | #5175 | |
| Astronomers speculate that quasars are the bright nuclei of these star systems | galaxies | $400 | DJ | GENERAL SCIENCE | 1993-12-07 | #2132 |