NASA Apollo 10 Astronaut Gene Cernan, right, answers questions from the Newseum's distinguished journalist-in-residence, Nick Clooney during a Newseum TV…
Astronauts Michael Good (bottom) and Mike Massimino participate in the STS-125 mission's fourth spacewalk on May 17, 2009, as work…
With a mostly dark home planet behind him, astronaut Michael Good rides Atlantis' remote manipulator system arm to the exact…
Tethered to the end of the remote manipulator system arm, which was controlled from inside Atlantis' crew cabin, STS-125 astronaut…
STS-125 mission specialist John Grunsfeld is about to attach a tether during a May 16, 2009, spacewalk to perform work…
Astronaut Michael Good peers through a window toward Atlantis' crew cabin interior, where his shirt-sleeved support team members busy themselves…
STS-125 astronaut Andrew Feustel selects his next tool to use while participating in the first of five scheduled spacewalks to…
Astronaut John Grunsfeld performs work on the Hubble Space Telescope as the first of five STS-125 spacewalks kicks off a…
In this tightly cropped image, the NASA space shuttle Atlantis is seen in silhouette during solar transit, Tuesday, May 12,…
Five Lunar Orbiter missions were launched in 1966 and 1967 to map the lunar surface before the Apollo landings. All…
