Scientist-astronaut Harrison H. Schmitt, Apollo 17 lunar module pilot, collects lunar rake samples at Station 1 during the mission's first spacewalk at the Taurus-Littrow landing site. | NASA

Moon's Amino Acids Likely Earthly Contamination: Photos

It's tough to protect the moon from us, as a group of scientists recently found when looking at rocks collected by Apollo astronauts.

November 9, 2015
7:00 AM EST
A close-up of a solar flare that happened on the sun in May 2013. The image is shown in false color to illustrate differences between different light wavelengths. | NASA/SDO/AIA
Apollo 14's lunar module, called Antares. | NASA
Aristarchus Crater seen by the Apollo 15 crew. | NASA
The crescent Earth seen by the Apollo 17 crew. | NASA
Artist's conception of the OSIRIS-REx mission. | NASA