| SPLASHDOWN | The end of space exploration, in the main |
| MINISUB | Car replacement, it's used for exploration in the main (4-3) |
| BOOSTERS | Stages of space exploration |
| COOK | British naval captain best remembered for his voyages of exploration in the Pacific. (4) |
| ROO | The bounder has no end of space (3) |
| PACE | Better returning by end of space walk! (4) |
| HELIUM | Used in space exploration, cryogenics, rocketry, lifting party balloons or raising the voice two octaves higher than normal, the lightest noble gas, atomic no. 2 (6) |
| NOTASAUSAGE | Nothing in books covered by practice of American space exploration? |
| DEEPWATER | Some oil exploration in big trouble (4,5) |
| QUARTERDAY | Given accommodation with no end of space? Always a time when payment's due (7,3) |
| ROOFRACKS | With no end of space, looks for oil that may be on one's estates |
| ESA | Space exploration organization headquartered in Paris: Abbr. |
| PROBES | Be surrounded by experts in space exploration (6) |
| WHO | Doctor involved in space exploration |
| NASA | Space exploration org. since October 1, 1958 |
| OBESE | Queen's decoration for initial space exploration is far too weighty (5) |
| ORIGIN | Jeff Bezos's space exploration company (4,6) |
| BLUE | Jeff Bezos's space exploration company (4,6) |
| ROBOTIC | Canada's historic contribution to space exploration, ___ Arm |
| ROVER | Mars -, space exploration vehicle (5) |
