Astronauts gave the space shuttle Atlantis's heat shield a final inspection Monday in preparation for their return to Earth.
The Atlantis crew brought along a photo of Isaac Newton, as well as a chip of wood from the famous apple tree that inspired his law of gravity, which they let float freely.
A Florida photographer captured both the Space Shuttle Atlantis and the International Space Station in silhouette in front of the sun last Sunday.
Two of the Shuttle Atlantis crew are on a spacewalk, working outside the International Space Station this morning to finish a battery upgrade service call on the station's solar arrays.
The space shuttle Atlantis with Earth as a backdrop is seen prior to docking with the International Space Station (ISS) in this handout photo provided by NASA and taken on May 16.
Renowned CBS News anchor and reporter Walter Cronkite (r.) is seen in a March 1981 file photo with President Ronald Reagan. Dubbed 'the most trusted man in America,' Cronkite broke stories such as President John F. Kennedy's and Martin Luther King Jr.'s assassinations and the landing on the moon. Cronkite died in his home in July 2009.
Neil Armstrong, the first man to walk on the moon, blasted Obama's decision to cancel NASA's manned mission to the moon.
A car drives through ash from Iceland's Eyjafjallajokull volcano on Thursday. Europe has been dogged for weeks by repeated shutdowns of air traffic since an erupting volcano under the Eyjafjallajokull glacier in Iceland started spewing ash in April.
After this flight of Space Shuttle Atlantis there are only two space shuttle missions left before the orbiters are retired.
Organized via Twitter, some 150 enthusiasts gathered at NASA's Kennedy Space Center to witness the final planned launch of the space shuttle Atlantis.