Click to open image viewer. As part of the Apollo program, a number of so-called "boilerplate" (BP) command modules were constructed to undergo various tests and to serve as training vehicles for ...

Apollo 13 was supposed to be NASA's third crewed mission to the surface of the moon, but nearly 56 hours into the flight, command module pilot John "Jack" Swigert radioed a troubling message to ...

The Apollo 13 mission remains one of the most dramatic episodes in the history of human spaceflight. Originally planned as NASA’s third mission to land astronauts on the Moon, Apollo 13 instead turned ...