From the smallest cell to the solar system, Science is an odyssey of scientific facts, investigations and breakthroughs.

Science

Astronauts evacuate when a mystery object hurtles toward the ISS; a NASA secret agent goes undercover to retrieve missing moon rocks; scientists struggle to find answers when they discover a huge void at the edge of the solar system.

NASA's Unexplained Files

Attack of the Thunderballs

From the smallest cell to the solar system, Science HD is an odyssey of scientific facts, investigations and breakthroughs.

Science HD

Two astronauts trapped in the vacuum of space face a horrible death; the first close up images of Pluto show an alien landscape; residents of Houston struggle to explain videos of unidentified flying lights captured above their city at night.

Red Storm Rising

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Discovery Plus

Three cosmonauts mysteriously die as they re-enter Earth's atmosphere and NASA needs to know why; a declassified document shows a CIA plan to use a space disaster as a cover to start World War 3.

Curse of the Red Planet

When a Chinese moon rover breaks down, a scientist at NASA points to a mysterious material that seemed to sabotage the Apollo missions decades earlier; the Rosetta spacecraft discovers a comet that appears to be singing.

Ghosts on a Comet

Neil Armstrong enters an unexplained spin; an Apollo 17 photo seems to show a US military outpost on the Moon; possible alien life swimming in the oceans of Jupiter's moons.

Rise of the Ice Creatures

Apollo 12 astronauts bring back something alive from the moon; NASA tracks an asteroid heading towards Earth but make an incredible discovery.

Return of the Moon Bugs

Lost tapes show that Apollo astronauts heard unexplained transmissions on the far side of the moon; an amateur astronomer finds an odd disturbance in Martian atmosphere; an unidentified object in Earth orbit starts stalking Russian spacecraft.

Pluto Under Pressure

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S3 E8 | Attack of the Thunderballs

E8 | Attack of the Thunderballs

E7 | Red Storm Rising

E6 | Curse of the Red Planet

E4 | Ghosts on a Comet

E3 | Rise of the Ice Creatures

E2 | Return of the Moon Bugs

E1 | Pluto Under Pressure