Space Exploration: Are the Gains Worth the Cost? |
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aboard accessed January 14 Aeronautics and Space Air Force American Apollo 11 Apollo program astronauts astronomers Atlantis budget called Columbia conducted cosmonauts crew crewmembers designed Discovery docking Earth orbit Earth's atmosphere engines Expedition facilities February Figure funding Galileo Gallup Organization Hubble human included infrared International Space Station Jupiter Kennedy Space Center lander landing launch lunar Mars Exploration Martian miles military million missile mission module Moon named NASA NASA's National Aeronautics Observatory Online operations orbit payload percent pilot planet poll President probes radiation radio reentry robotic spacecraft rocket Rosaviakosmos Rover Russian Salyut satellites Saturn scientific scientists shuttle fleet shuttle flight Shuttle-Mir Skylab solar system solar wind SOURCE Soviet space Soviet space program Soviet Union Soyuz Space Administration Space Agency Space Environment Center space exploration Space Flight space program space science space shuttle program Space Telescope space travel stars surface Technology tion United