What’s Wrong with Our Sun?

In an age when misinformation, alternative facts, and conspiracy theories have become mainstream, UFOs have risen to become one of the most-talked...

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

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

For 18-year-old Finnish–Kosovan Fatu, a simple visit to the grocery store feels as nerve-racking as a lunar expedition: for the first time in...

In 1587, more than 100 English colonists settle on Roanoke Island and soon vanish, baffling historians for centuries; now, experts use the latest...

How can structures, which take up defined, rigid portions of space, make us feel transcendence? How can chapels turn into places of introspection?...

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...

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

Archival material from the original NASA film footage – much of it seen for the first time – plus interviews with the surviving...

In a studio setting, Stephen Hawking, Arthur C. Clarke and Carl Sagan (who joins them via satellite) discuss the Big Bang theory, God, our existence...

In the year 1957 the cold war expands to space. The Soviet-Union sends Sputnik as the first manmade object into earth-orbit. 3 years later Yuri...

"What's on your mind?" It's the friendly Facebook question which lets you share how you're feeling. It's also the question that unlocks the details...