JL Ledang Trung Ledang San Jose NASA-Cassini/Huygens/Soyuz-Phoenix Mars Lander-Gemini-Apollo-Pathfinder Sojourner-NASA/JPL/CALTECH-Hubble Heritage Team-EVA-Skylab-EVE-ESA-New Horizon-NASA Goddard-Mars Global Surveyor-Deep Impact/EPOXI(U.S.) Freedom 7-Endeavour-NASA/Curiosity-NASA;Bettmann/Corbis;NASA/JPL-