How will scientists protect Earth from extraterrestrial germs?
, Updated 14 Dec 2020, 14:10 GMT Dr. Daniel H. Anderson, an aerospace technologist and test director in the Nonsterile Nitrogen Processing Laboratory in the Lunar Receiving Laboratory at the Manned Spacecraft Center looks at much-discussed Apollo 14 basketball-size rock through a microscope. The two moon-exploring crew men of Apollo 14 brought back 90-odd pounds of lunar sample material from their two periods of extravehicular activity on the lunar surface in the Fra Mauro area. Photograph by N...
Source: nationalgeographic.co.uk