NASA's Unexplained Files
President Kennedy demands that the CIA share its UFO data with NASA; coded alien message on Mars.
President Kennedy demands that the CIA share its UFO data with NASA; coded alien message on Mars.
Soviet photos of the moon are intercepted by the CIA; a malfunction aboard the ISS.
A probe carrying a message for aliens malfunctions without cause as it enters deep space.
A theory of Earth's abiogenesis may have started in the clouds of Venus.
Cosmonauts are trapped in a capsule in a frozen lake; a NASA scientist investigates the Hindenburg.
Astronomers notice a planet in Earth's vicinity capable of supporting life.
The discovery of geysers on a moon; NASA's mission to detect life.
A mars mission captures an image of a strange structure on the planet.
Evidence of alien technology around a distant star; speculation about Pluto's surface.
NASA tracks an asteroid heading towards Earth but make an incredible discovery.
Lost tapes show that Apollo astronauts heard unexplained transmissions on the far side of the moon.
Two astronauts trapped in the vacuum of space face a horrible death.
The Rosetta spacecraft discovers a comet that appears to be singing.
Astronauts evacuate when a mystery object hurtles toward the International Space Station.
Recently discovered documents show NASA's secret plan B for failure of the first moon landing.
Three cosmonauts mysteriously die as they re-enter Earth's atmosphere and NASA needs to know why.
An Apollo 17 photo seems to show a US military outpost on the Moon.
Looking at how the comet of the century looks like an alien spacecraft.
New evidence could finally reveal the truth behind the mystery of the face on Mars.
Images of Mercury show spider-like formations; A space shuttle mission almost ends in disaster.