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Laika, a stray dog, was the first living being to be sent into space and thus to a certain death. A legend says that she returned to Earth as a ghost...

On July 16, 1969, hundreds of thousands of spectators and an army of reporters gathered at Cape Kennedy to witness one of the great spectacles of the...

Aspiring teenage astronauts reveal that a journey to Mars is closer than you think.

National Geographic's riveting effort recounts all 12 crewed missions using only archival footage, photos and audio.

The captivating tales of the people and events behind one of humanity's greatest achievements in exploration: NASA's Voyager mission.

A UFO enthusiast interviews Dan Aykroyd on the subject of extraterrestrials visiting Earth.