A half century after NASA's Apollo 17 lunar module lifted off the Moon's northeastern near side quadrant, planetary scientists still don't completely understand when or how our Moon first formed.

A half century after NASA's Apollo 17 lunar module lifted off the moon's northeastern near side quadrant, planetary scientists still don't completely understand when or how our moon first formed. They do agree that it involved a major impactor—an object dubbed Theia by lunar scientists—that likely struck Earth some 4.

Add Yahoo as a preferred source to see more of our stories on Google. On Dec. 11, 1972, Apollo 17 became the last mission to launch humans on the moon. [‘On This Day in Space’ Video Series on Space.com] With two astronauts on board, the lunar module ...

Shaving was something of a job on all the Apollo missions because in Zero-G, water doesn't just run off the face. Flickr/NASA Photo/ Project Apollo Archive The last human to walk on the moon was Eugene Cernan, commander of the Apollo 17 mission, on ...