For NASA to send a person Mars, they need to build the most powerful rocket ever built. Discover inside story behind the Orion Space Craft, an engineering feat designed to sustain astronauts for years in one of the universe’s harshest environments.
British astronomers working for the CIA intercept Soviet photos of the moon. A malfunction on the ISS could poison its crew with deadly ammonia gas. A startling image taken by a NASA probe points to evidence that life could exist on Mars.
A soaring quest through the solar system's exotic and hidden water realms, from the deep seas below the icy crust of Europa to the vast prehistoric oceans that once existed on Mars billions of years ago.
We're on the verge of uncovering the how life on Earth came to be. Our origin is a hotly contested scientific debate. Did we come from strange volcanic hatcheries deep under the sea? Or did life on Earth come from another planet?
A mission to Mars captures an image of a strange structure on the Red Planet. Files from the first Apollo mission record an eerie sighting on the dark side of the moon. A planet-eating star gives scientists a glimpse of Earth's terrible demise.
Hubble needs rescue, and a space station paves the way back to the moon and mars. Featuring newly re-mastered film from NASA's vault and told by the astronauts and engineers who were there.
Where did the Earth's oceans come from? For years, scientists suspected they came from molecules delivered to Earth from distant stars by asteroids, but an exciting new discovery suggests that its true origins are be more exotic than anyone imagined.