Claims have emerged that NASA pilots were told to destroy photos that may have contained images of UFOs, as other astronauts alleged aliens warned them to stay away from the moon.

Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature of the universe.

McClelland claims he is a retired NASA spacecraft operator (ScO) who worked with NASA’s Shuttle Fleet at the Kennedy Space Center in Florida from 1958 to 1992. He was involved in hundreds of NASA ...

Add Yahoo as a preferred source to see more of our stories on Google. PASADENA, California — NASA's new alien-hunting telescope, the Habitable Worlds Observatory (HWO), will be serviceable out in ...

The Apollo 17 astronauts were the last humans to set foot on the moon, and apparently the three crew members saw some very interesting sights during the mission. While scouring the lunar surface for ...

They haven’t found alien life out there yet, but following the first successful in-space DNA sequencing, astronauts have a better way to look for it. This first test was mostly just to see that DNA ...

NASA Administrator Jared Isaacman revealed the agency possesses unexplained images of unidentified objects and suggested Mars samples might hold clues to ancient alien life.

Stephen Smith is a managing editor for CBSNews.com based in New York. A Washington, D.C. native, Steve was previously an editorial producer for the Washington Post, and has also worked in Los Angeles, ...

Professor Carol Oliver suggests that time dilation, a cosmic phenomenon, may deter aliens from visiting Earth, as interstellar travel could leave them stranded in a future far from home.