| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| In 1973 this new comet became the 1st to be studied from space when photographed by Skylab | Kohoutek | $1,000 | DJ | ASTRONOMY | 1991-11-25 | #1666 | |
| Discovered in 1973, this comet was extensively investigated from Skylab | Kohoutek | $400 | J | ASTRONOMY | 1988-04-08 | #840 | |
| Unlike Halley's, it'll take another 75,000 years for this comet, 1st seen in 1973, to return | Kohoutek | $1,000 | DJ | ASTRONOMY | 1987-07-15 | #678 | |
| Comet in 1973 which didn't put on its promised show | Kohoutek DD | $1,500 | DJ | SPACE | 1984-11-27 | #57 |