| Rocket scientist's employer | 31 |
| Rocket launcher? | 16 |
| Rocket launcher, for short | 26 |
| Rocket agency | 13 |
| Prominent acronym on July 20, 1969 | 34 |
| Project Mercury gp. | 19 |
| Project Apollo implementer | 26 |
| Planner of long trips | 21 |
| Pioneer's org. | 18 |
| Pioneer gp. | 11 |
| Phoenix Mars Lander launcher | 28 |
| Payload delivery org. | 21 |
| Pad owner | 9 |
| Outer-space agcy. | 17 |
| Orion Mars mission gp. | 22 |
| Org. with many launches | 23 |
| Org. with lofty goals? | 22 |
| Org. with launch parties? | 25 |
| Org. with frequent launchings | 29 |
| Org. with an Earth Observatory web page | 39 |
| Org. with a lot of long shots? | 30 |
| Org. with a launch pad | 22 |
| Org. whose motto is "For the benefit of all" | 54 |
| Org. that von Braun worked for | 30 |
| Org. that reaches for the stars? | 32 |
| Org. that publishes an Astronomy Picture of the Day | 51 |
| Org. that launched the Columbia | 31 |
| Org. that does launches | 23 |
| Org. that discovered GFAJ-1 | 27 |
| Org. that Carl Sagan advised | 28 |
| Org. launching Phoenix in 2007 | 30 |
| Org. in President Gingrich's moon colony plan | 49 |
| Org. in a big race of years past | 32 |
| Org. in "The Right Stuff" | 35 |
| Org. in "Space Cowboys" | 33 |
| Org. for Apollo and Mercury | 27 |
| Org. depicted in "Apollo 13" | 38 |
| Org. above it all? | 18 |
| Orbiting telescope launcher | 27 |
| Opportunity maker? | 18 |
| Opportunity creator? | 20 |
| Operation IceBridge grp. | 24 |
| Operates Atlantis | 20 |
| Noted rocket launchers | 22 |
| Nimbus launcher of 1964 | 23 |
| NEAR project agency | 19 |
| Moonshot sponsor | 16 |
| Moonlighting group | 18 |
| Moon conqueror | 14 |
| Moon buggy org. | 15 |
| Monogram at Houston | 19 |
| Mission-to-Mars org. | 20 |
| Mission Control gp. | 19 |
| MESSENGER launcher | 18 |
| Mercury-raising org. | 20 |
| Mercury org. | 12 |
| Mars Pathfinder launcher | 24 |
| Mars mission org. | 17 |
| Mariner's grp. | 18 |
| Mariner's group | 19 |
| Man-on-the-moon agcy. | 21 |
| Magellan's org. | 19 |
| Magellan's grp. | 19 |
| Magellan sponsor | 16 |
| Magellan org. | 13 |
| Ltrs. on a rocket | 17 |
| Logo on some spacesuits | 23 |
| Logo on some G-suits | 20 |
| Letters on spacesuits | 21 |
| Letters on G-suits | 18 |
| Letters on Endeavour | 20 |
| Letters on a shuttle | 20 |
| Letters on a Schirra suit | 25 |
| LEM's creator | 17 |
| LEM maker | 9 |
| LEM launcher | 12 |
| LEM agency | 10 |
| Launching gp. | 13 |
| Launching agency | 16 |
| Launcher of the Curiosity rover | 31 |
| Launcher of Mars rovers | 23 |
| Launcher launched in 1958 | 25 |
| Launch party? | 13 |
| Launch pad gp. | 14 |
| Launch agcy. | 12 |
| KSC agency | 10 |
| Kennedy Space Center org. | 25 |
| JPL overseer | 12 |
| JPL org. | 8 |
| Johnson Space Center org. | 25 |
| James Beggs's agcy. | 23 |
| Its Web site has an Ozone Resource Page | 39 |
| Its vehicles aren't UFOs | 28 |
| Its red-letter day was in July 1969 | 35 |
| Its motto is "For the benefit of all" | 47 |
| Its logo has 41 stars | 21 |
| Its insignia includes an orbiting spacecraft | 44 |
| It recently confirmed that Voyager 1 has left the solar system | 62 |
| It put a man on the moon | 24 |
| Inits. on Mars | 14 |