A year ago today, the FBI suddenly shut down a remote mountaintop observatory with no explanation. The internet went wild with theories.

Williamina Fleming was just supposed to help the director of the Harvard Observatory with household tasks. Instead, she changed the course of astronomy.

Major Robert Lawrence was trained by the Air Force in an elite Cold War-era program. This is why you've never heard of him.

This is the story of a romance that just works — cosmic conspiracies, life sentences and all.

As a young test pilot for the Apollo missions, he had one dream. It never took off — at least not the way he'd planned.

This is the true story of six strangers picked to live together in a geodesic dome, on top of a volcano, in a barren atmosphere chosen to replicate life in outer space.

The funky, freeze-dried snack that’s been embraced by backpackers, soldiers, and apocalyptic survivalists has one surprising secret: Among space explorers, it never took off.