NASA had a contingency plan in case Apollo astronauts were stranded near the Moon, but it was far stranger and riskier than you might expect.

Add Yahoo as a preferred source to see more of our stories on Google. The James Webb Space Telescope has delivered new evidence that sheds light on what scientists know about black holes. Launched ...

NASA scientists have found the remains of a U.S. military base buried 100 feet below the surface of the ice in Greenland.

As the United States approaches the 250th Anniversary of Independence, NASA is preparing a very specific kind of celebration: a crewed loop around the Moon that quietly doubles as a time capsule.