| NASA order | 10 |
| NASA order, perhaps | 19 |
| NASA outfit | 11 |
| NASA outfits | 12 |
| NASA outing | 11 |
| NASA part | 9 |
| NASA platforms | 14 |
| NASA postponement | 17 |
| NASA prefix | 11 |
| NASA pressure unit | 18 |
| NASA probe | 10 |
| NASA probe launched in 1989 | 27 |
| NASA problem part | 17 |
| NASA program | 12 |
| NASA program after Gemini | 25 |
| NASA program that explored the outer planets | 44 |
| NASA program that was the first to photograph another planet | 60 |
| NASA project | 12 |
| NASA project for communicating with aliens | 42 |
| NASA pt. | 8 |
| NASA purchase | 13 |
| NASA rank | 9 |
| NASA recruiting site | 20 |
| NASA research center | 20 |
| NASA responses | 14 |
| NASA robot | 10 |
| NASA robotic vehicle | 20 |
| NASA rocket stage | 17 |
| NASA rockets, to space aliens | 29 |
| NASA satellite launcher | 23 |
| NASA sci. | 9 |
| NASA scientist's concern | 28 |
| NASA scrapheap? | 15 |
| NASA scratch | 12 |
| NASA scrub | 10 |
| NASA sites | 10 |
| NASA space capsules | 19 |
| NASA space observatory named for a Renaissance astronomer | 57 |
| NASA space probe | 16 |
| NASA spacecraft that photographs Saturn | 39 |
| NASA spaceplane | 15 |
| NASA spacewalk | 14 |
| NASA spacewalks | 15 |
| NASA spacewalks, in brief | 25 |
| NASA specialties | 16 |
| NASA staffer | 12 |
| NASA structures | 15 |
| NASA subj. | 10 |
| NASA subject | 12 |
| NASA successes | 14 |
| NASA target | 11 |
| NASA thumbs-up | 14 |
| NASA thumbs-ups | 15 |
| NASA transport | 14 |
| NASA vehicle | 12 |
| NASA vehicle name | 17 |
| NASA vehicle's unit | 23 |
| NASA vehicles | 13 |
| NASA waiver | 11 |
| NASA walk | 9 |
| NASA walk, for short | 20 |
| NASA weather satellite | 22 |
| NASA word | 9 |
| NASA worker's degree | 24 |
| NASA worker's enthusiastic cry? | 35 |
| NASA workers' undergrad degrees | 35 |
| NASA workshop? | 14 |
| NASA ___ Research Center | 24 |
| NASA's 'Forget it' | 30 |
| NASA's "all systems gO" | 37 |
| NASA's "Go" | 25 |
| NASA's "not ready" | 32 |
| NASA's Aquarius, e.g. | 25 |
| NASA's Armstrong | 20 |
| NASA's concern | 18 |
| NASA's counterpart across the pond | 38 |
| NASA's creator | 18 |
| NASA's domain | 17 |
| NASA's Eagle, for one | 25 |
| NASA's Eagle, notably | 25 |
| NASA's EOS flagship | 23 |
| NASA's Falcon and Intrepid | 30 |
| NASA's Gemini rocket | 24 |
| NASA's Grissom | 18 |
| NASA's Jet Propulsion Lab partner | 37 |
| NASA's lunar program | 24 |
| NASA's milieu | 17 |
| NASA's moon-landing project | 31 |
| NASA's overseas counterpart | 31 |
| NASA's response to "How's business?" | 54 |
| NASA's Shepard | 18 |
| NASA's Slayton | 18 |
| NASA's Spirit and Opportunity | 33 |
| NASA's Spirit and Opportunity? | 34 |
| NASA's ___ Research Center | 30 |
| NASA, e.g. | 10 |
| NASA, for one | 13 |
| NASA-Armstrong coup | 19 |
| NASA-speak numeral | 18 |
| NASA? | 5 |