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 | NOVA scienceNOW: Asteroid
Will a doomsday rock the size of the Rose Bowl hit Earth in 2036? |
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 | Astrospies
An elite corps of secret U.S. astronauts is trained to gather intelligence on the Soviets during the Cold War. |
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 | Death Star
Astronomers investigate gamma-ray bursts, the most powerful celestial explosions since the big bang. |
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 | Einstein's Big Idea
The story behind the world's most famous equation, E = mc2 |
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 | Einstein Revealed
Meet the young patent clerk whose ideas about light, space, and time have transformed our view of the universe. |
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 | Elegant Universe, The
Eleven dimensions, parallel universes, and a world made out of strings. It's not science fiction, it's string theory. |
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 | Hunt for Alien Worlds
Astronomers discover planets beyond our solar system. But is there life on them? |
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 | Kidnapped by UFOs?
Carl Sagan and other scientists investigate claims that people have been visited or abducted by aliens. |
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 | Ghost Particle, The
A 40-year hunt for solar neutrinos leads to a new understanding of matter itself. |
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 | Hubble's Amazing Rescue
The unlikely story of how the world's most beloved telescope was saved. |
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 | NOVA scienceNOW: Hunt for Alien Earths
Astronomers may be on the brink of finding Earth-like planets beyond our solar system. |
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 | Is There Life on Mars?
The decades-long search for life on the Red Planet heats up with the discovery of frozen water. |
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 | Magnetic Storm
Is the magnetic field protecting Earth from deadly radiation about to reverse direction or even disappear? |
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 | MARS Dead or Alive
NASA gambles on two rovers sent to determine if the red planet ever had conditions suitable for life. |
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 | Monster of the Milky Way
Does a supermassive black hole lurk at the center of our galaxy? |
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 | NOVA scienceNOW: Moon Smasher
A NASA satellite called LCROSS heads to the moon in the hope of finding buried water. |
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 | Newton's Dark Secrets
Sir Isaac Newton, the eccentric genius who helped define modern science, was also an obsessive alchemist. |
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 | Origins
Journey back to the beginning of everything: the universe, Earth, and life itself. |
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 | NOVA scienceNOW: Phoenix Mars Lander
NASA's latest robot has already found frozen water and is looking for more signs that the Red Planet could support life. |
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 | The Pluto Files
Take a cross-country journey with Neil deGrasse Tyson to explore the rise and fall of America's favorite planet. |
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 | NOVA scienceNOW: Profile: Franklin Chang-Díaz
The first Latino-American astronaut is also a scientist designing a new generation of plasma-powered space vehicles. |
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 | Runaway Universe
Astronomers grapple with some very big questions: what is the size and shape of the universe, and how will it end? |
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 | NOVA scienceNOW: Saving Hubble
Two teams of spacewalkers take on the risky mission of reviving the ailing Space Telescope. |
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 | NOVA scienceNOW: The Search for ET
Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there? |
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 | NOVA scienceNOW: Space Elevator
Can we build a 22,000-mile-high cable to transport cargo and people into space? |
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 | Space Shuttle Disaster
An investigation uncovers the human failures and design flaws behind the 2003 Columbia tragedy. |
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 | NOVA scienceNOW: Space Storms
Behind the dazzling display of the aurora borealis are space storms that could turn the lights off here on Earth. |
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 | Sputnik Declassified
Top-secret documents rewrite the history of the famous satellite and the early space race. |
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 | Stationed in the Stars
NOVA examines the International Space Station, the largest construction project ever undertaken in orbit. |
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 | Terror in Space
Russian and American astronauts experience life-threatening problems aboard the aging Mir space station. |
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 | Time Travel
Is time travel anything more than sci-fi fantasy? Leading physicists ponder building a time machine. |
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 | Voyage to the Mystery Moon
NASA and the European Space Agency dispatch a two-part mission to study Saturn and its enigmatic satellite, Titan. |
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 | To The Moon
Relive the remarkable history of humankind's journeys to the moon. |
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 | Welcome to Mars
Two rovers roaming the surface of Mars find proof that it was once awash in water. |
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