| Clue | Answer |
| Website overtaken by Facebook | |
| Seattle landmark | |
| MIR or the ISS, e.g. | |
| Challenger or Atlantis | |
| 4-D continuum described by Einstein | |
| Arcade game released in 1978 | |
| Star Trek series that aired until 1999 | |
| Delete key counterpart | |
| Person who's out to lunch | |
| Cold War contest between USA and USSR | |
| | Clue | Answer |
| Astronaut outer wear | |
| Debris that orbits Earth | |
| David Bowie song | |
| 2001: a ... | |
| Calvin's alter ego | |
| Michael Jordan movie | |
| Also known as a moon hopper | |
| 1999 American comedy movie | |
| Science fiction TV series produced by Irwin Allen | |
| A 3D representation of virtual space | |
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