Geologist Jack Schmitt loaded 110 kilos of granite into the lunar lander of Apollo 17 on December 14, 1972. Eugene A., the mission's commander

Geologist Jack Schmitt loaded 110 kilos of granite into the lunar lander of Apollo 17 on December 14, 1972. Eugene A., the mission's commander

While looking out over the lunar surface's craters, Cernan radioed back to mission control in Houston, Texas.

While looking out over the lunar surface's craters, Cernan radioed back to mission control in Houston, Texas.

Scientists at the University of British Columbia have revealed baker's yeast payloads that were recently carried to the moon and may one day shield humans from cosmic radiation.

Scientists at the University of British Columbia have revealed baker's yeast payloads that were recently carried to the moon and may one day shield humans from cosmic radiation.

Cernan declared, "We depart as we found them, and God willing, we shall return, with peace and hope for all mankind."

Cernan declared, "We depart as we found them, and God willing, we shall return, with peace and hope for all mankind."

Finally, after 50 years, humans are getting ready to set foot on the moon once more. 

Finally, after 50 years, humans are getting ready to set foot on the moon once more. 

Many see this as the beginning of a new effort to explore deep space after NASA's most potent rocket ever built launched the Orion spacecraft from Cape Canaveral, Florida, in November.

Many see this as the beginning of a new effort to explore deep space after NASA's most potent rocket ever built launched the Orion spacecraft from Cape Canaveral, Florida, in November.