Audio clip: Charlie Brown was selected by the astronauts as the codename for the Apollo 10 command module and his friend Snoopy was the call sign for the lunar module. Mosher: NASA launched 10 of ...

While in orbit in 1969, a member of the Apollo 10 crew snapped this series of photographs, which we made into the GIF above, that show Earth rising over the lunar horizon. The Earth is only half ...