Goodbye moon

Fri Dec 14, 2012 7:20am IST

1 of 22. The crescent Earth rises above the lunar horizon in this undated NASA handout photograph taken from the Apollo 17 spacecraft in lunar orbit during the final lunar landing mission in the Apollo program. December 13, 2012 marks the 50th anniversary of the last manned lunar trip.

Credit: Reuters/NASA/Handout

40 years ago, mankind took its last steps on the moon with the Apollo 17 lunar mission. A look at the Apollo project and other moon missions that might have been.