| Answer | Crossword Clue |
|---|---|
| MARINER | Orbiter of Venus. |
| GLENN | Orbiter of '98 |
| GLENN | Orbiter of note |
| PHOBOS | Orbiter of Mars |
| APOLLOX | Lunar orbiter of 1969 |
| GLENN | Geriatric orbiter of '98 |
| ENOS | Nonhuman Earth orbiter of 1961 |
| SKYLAB | Earth orbiter through much of the 1970s |
