A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

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 ...

The Pentagon has opened a case to investigate this 1972 NASA photo from the Apollo 17 mission on the moon. The image contains three unidentified dots above the lunar horizon. Credit: NASA / Department ...

The Pentagon is also investigating a photo from the mission showing three bright lights in a triangular formation above the lunar surface. These documents were part of a larger release of government ...