| 100% | ENTERPRISE | 10 | NASA's first Space Shuttle orbiter constructed by Rockwell International |
| 87% | CHALLENGER | 10 | NASA's second Space Shuttle orbiter constructed by Rockwell International |
| 87% | ATLANTIS | 8 | NASA's fourth Space Shuttle orbiter constructed by Rockwell International |
| 85% | COLUMBIA | 8 | NASA's first space-rated Space Shuttle orbiter constructed by Rockwell International |
| 34% | DISCOVERY | 9 | First shuttle to be retired by NASA |
| 32% | ENDEAVOUR | 9 | NASA Space Shuttle aka OV-105 whose first mission was in May, 1992 |
| 32% | ENDEAVOUR | 9 | NASA Space Shuttle aka OV-105 whose first mission was in May 1992 |
| 29% | NEIL | 4 | Armstrong, NASA's first civilian astronaut to fly in space |
| 29% | COLUMBIA | 8 | Name of the first space shuttle, launched 1981 |
| 27% | CHALLENGER | 10 | NASA's space shuttle that broke apart 73 seconds after take off in 1986 |
| 26% | CHALLENGER | 10 | Space Shuttle —, orbiter that exploded 73 seconds after lift-off in January, 1986 |
| 26% | CHALLENGER | 10 | Space Shuttle —, orbiter that exploded 73 seconds after lift-off in January 1986 |
| 26% | EROS | 4 | First asteroid orbited by a NASA spacecraft |
| 25% | DISCOVERY | 9 | NASA space shuttle in service from 1984-2011 |
| 25% | EROS | 4 | First asteroid landed on by a NASA craft |
| 25% | ENDEAVOUR | 9 | Final operational shuttle built by NASA |
| 25% | EILEEN | 6 | First woman Space Shuttle pilot Collins |
| 25% | SHUTTLE | 7 | Space __; spacecraft system operated by NASA |
| 25% | ORBIT | 5 | Space shuttle's path |
| 25% | REENTRY | 7 | Space shuttle's return |
| 25% | DISCOVERY | 9 | First operational space shuttle to be retired |
| 24% | ULF | 3 | First German Space Shuttle payload specialist, ___ Merbold ('83) |
| 24% | ALANSHEPARD | 11 | First American to travel into space during NASA's 1961 Freedom 7 mission |
| 24% | DUCT | 4 | ___ tape was invited by NASA for use in space |
| 24% | ORBIT | 5 | Space shuttle's path around the Earth |
| 24% | SPAR | 4 | Space Shuttle's original Canadarm maker: ___ Aerospace |
| 24% | ISS | 3 | NASA's six-person orbiter |
| 24% | GODDARD | 7 | NASA's __ Space Flight Center |
| 23% | THEPURSUED | 10 | 1935 novel by C S Forester first published in 2011 |
| 23% | CASSINI | 7 | First space probe to enter Saturn's orbit |