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NOVA scienceNOW: Asteroid

NOVA scienceNOW: Asteroid
Will a doomsday rock the size of the Rose Bowl hit Earth in 2036?

Astrospies

Astrospies
An elite corps of secret U.S. astronauts is trained to gather intelligence on the Soviets during the Cold War.

Death Star

Death Star
Astronomers investigate gamma-ray bursts, the most powerful celestial explosions since the big bang.

Einstein's Big Idea

Einstein's Big Idea
The story behind the world's most famous equation, E = mc2

Einstein Revealed

Einstein Revealed
Meet the young patent clerk whose ideas about light, space, and time have transformed our view of the universe.

Elegant Universe, The

Elegant Universe, The
Eleven dimensions, parallel universes, and a world made out of strings. It's not science fiction, it's string theory.

Hunt for Alien Worlds

Hunt for Alien Worlds
Astronomers discover planets beyond our solar system. But is there life on them?

Kidnapped by UFOs?

Kidnapped by UFOs?
Carl Sagan and other scientists investigate claims that people have been visited or abducted by aliens.

Ghost Particle, The

Ghost Particle, The
A 40-year hunt for solar neutrinos leads to a new understanding of matter itself.

Hubble's Amazing Rescue

Hubble's Amazing Rescue
The unlikely story of how the world's most beloved telescope was saved.

NOVA scienceNOW: Hunt for Alien Earths

NOVA scienceNOW: Hunt for Alien Earths
Astronomers may be on the brink of finding Earth-like planets beyond our solar system.

Is There Life on Mars?

Is There Life on Mars?
The decades-long search for life on the Red Planet heats up with the discovery of frozen water.

Magnetic Storm

Magnetic Storm
Is the magnetic field protecting Earth from deadly radiation about to reverse direction or even disappear?

MARS Dead or Alive

MARS Dead or Alive
NASA gambles on two rovers sent to determine if the red planet ever had conditions suitable for life.

Monster of the Milky Way

Monster of the Milky Way
Does a supermassive black hole lurk at the center of our galaxy?

NOVA scienceNOW: Moon Smasher

NOVA scienceNOW: Moon Smasher
A NASA satellite called LCROSS heads to the moon in the hope of finding buried water.

Newton's Dark Secrets

Newton's Dark Secrets
Sir Isaac Newton, the eccentric genius who helped define modern science, was also an obsessive alchemist.

Origins

Origins
Journey back to the beginning of everything: the universe, Earth, and life itself.

NOVA scienceNOW: Phoenix Mars Lander

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.

The Pluto Files

The Pluto Files
Take a cross-country journey with Neil deGrasse Tyson to explore the rise and fall of America's favorite planet.

NOVA scienceNOW: Profile: Franklin Chang-Díaz

NOVA scienceNOW: Profile: Franklin Chang-Díaz
The first Latino-American astronaut is also a scientist designing a new generation of plasma-powered space vehicles.

Runaway Universe

Runaway Universe
Astronomers grapple with some very big questions: what is the size and shape of the universe, and how will it end?

NOVA scienceNOW: Saving Hubble

NOVA scienceNOW: Saving Hubble
Two teams of spacewalkers take on the risky mission of reviving the ailing Space Telescope.

NOVA scienceNOW: The Search for ET

NOVA scienceNOW: The Search for ET
Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there?

NOVA scienceNOW: Space Elevator

NOVA scienceNOW: Space Elevator
Can we build a 22,000-mile-high cable to transport cargo and people into space?

Space Shuttle Disaster

Space Shuttle Disaster
An investigation uncovers the human failures and design flaws behind the 2003 Columbia tragedy.

NOVA scienceNOW: Space Storms

NOVA scienceNOW: Space Storms
Behind the dazzling display of the aurora borealis are space storms that could turn the lights off here on Earth.

Sputnik Declassified

Sputnik Declassified
Top-secret documents rewrite the history of the famous satellite and the early space race.

Stationed in the Stars

Stationed in the Stars
NOVA examines the International Space Station, the largest construction project ever undertaken in orbit.

Terror in Space

Terror in Space
Russian and American astronauts experience life-threatening problems aboard the aging Mir space station.

Time Travel

Time Travel
Is time travel anything more than sci-fi fantasy? Leading physicists ponder building a time machine.

Voyage to the Mystery Moon

Voyage to the Mystery Moon
NASA and the European Space Agency dispatch a two-part mission to study Saturn and its enigmatic satellite, Titan.

To The Moon

To The Moon
Relive the remarkable history of humankind's journeys to the moon.

Welcome to Mars

Welcome to Mars
Two rovers roaming the surface of Mars find proof that it was once awash in water.

 

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