The patch features Apollo, the god of the sun. Apollo's chariot is flying across space. "Ex Luna Scientia" means "From the moon, knowlege." 

An explosion in one of the service module oxygen tanks crippled the spacecraft and forced a return to earth without landing.

Launch Date: April 11, 1970

Launch Vehicle: Saturn V

Crew: James A. Lovell Jr., John L. Swigert, Jr., Fred W. Haise