Delve into the untold
story of a secret U.S. Air Force-run program designed to launch military astronauts on spy missions in space during the Cold War. 1 hr.
Astronomers investigate gamma ray bursts, the most powerful celestial explosions since the big bang. 1 hr.
Doomsday Asteroid, The
Join scientists as they scan the skies and the geological record on Earth for evidence that giant rocks from outer space have struck before and will eventually strike again. 1 hr.
Galileo's Battle for the Heavens
Learn about Galileo Galilei's pioneering telescopic observations, his fateful Inquisition trial for heresy, and life in the seventeenth century in this re-creation of the famous scientist's life. 2 hrs.
Hunt for Alien Worlds
Astronomers discover planets beyond our solar system. But is there life on them? 1 hr.
Kidnapped by UFOs?
Carl Sagan and other scientists investigate claims that people have been visited or abducted by aliens. 1 hr.
MARS Dead or Alive
Follow NASA scientists as they build, test, check out, and launch of a pair of exploration rovers designed to serve as remote-controlled Mars field geologists. 1 hr.
Monster of the Milky Way
Explore the nature of black holes and follows scientists as they seek to understand the supermassive black hole at the center of our galaxy. 1 hr.
NOVA scienceNOW: 10th Planet
Learn about a discovery at the far reaches of the solar system that raises questions about what makes a planet a planet. Running time: 5:00 minutes.
NOVA scienceNOW: Asteroid
Find out the threat of an asteroid named Apophis hitting Earth. Running time: 12:00 minutes.
NOVA scienceNOW: Dark Matter
Find out how scientists are trying to detect dark matter, a mysterious form of matter that exerts a gravitational force and seems to hold different bodies in the universe together. Running time: 13m 50s.
NOVA scienceNOW: Phoenix Mars Lander
Learn about the Phoenix Mars Mission and its search for signs that the Red Planet could support life. 12m 00s
NOVA scienceNOW: Saving Hubble
Hear scientists describe the risky, high-stakes repairs on the Hubble Space Telescope. Running time: 13m 01s.
NOVA scienceNOW: Space Elevator
Follow scientists in their quest to produce an elevator to space made from carbon nanotubes. Running time: 12:00 minutes.
NOVA scienceNOW: Space Storms
Find out what causes space weather and how one mission may aid space-weather predictions. Running time: 9m 52s.
NOVA scienceNOW: The Search for ET
Learn about the search for extraterrestrial intelligence (SETI) and see how this search has changed over the past 40 years and how it has recently accelerated thanks to new search tools. 11m 26s
Origins: Back to the Beginning
Learn about the chemical nature of the universe and how the cosmic microwave background may help reveal how the universe began. 1 hr.
Origins: Earth is Born
Find out how Earth evolved into a planet, how its magnetic field formed, and the role Earth may have played in the formation of the moon. 1 hr.
Origins: Where are the Aliens?
Join scientists who search for extrasolar planets and signs of extraterrestrial life. 1 hr.
Rescue Mission in Space
Follow the space repair of the Hubble Telescope and glimpse the images of space it now produces. 1 hr.
Astronomers grapple with some very big questions: what is the size and shape of the universe, and how will it end? 1 hr.
Science Odyssey, A: Mysteries of the Universe
Traces what astronomers have learned about the cosmos, how Einstein changed the face of physics, how the atomic model and particle physics developed, and what led to the splitting of the atom. 2 hrs.
Space Shuttle Disaster
Learn the story of the space shuttle program and find out what led to the 1986 Challenger and 2003 Columbia disasters. 1 hr.
Discover the political and scientific story behind the 1957 launch of the first satellite, Sputnik 1. 1hr
Stationed in the Stars
NOVA examines the International Space Station, the largest construction project ever undertaken in orbit. 1 hr.
Terror in Space
Russian and American astronauts experience life-threatening problems aboard the aging Mir space station. 1 hr.
Is time travel anything more than sci-fi fantasy? Leading physicists ponder building a time machine. 1 hr.
To the Moon
Relive the remarkable history of humankind's journeys to the moon. 2 hrs.
See what the spacecraft Magellan sees as it flies by Venus to reveal the planet's true face, one of the most bizarre places in the solar system. 1 hr.
Voyage to the Mystery Moon
Journey along with the Cassini-Huygens mission to learn more about Saturn, its rings, and its moons. 1 hr.
Welcome to Mars
Follow the day-to-day operations of the Mars Exploration Rover team as it confronts hurdles, decisions, triumphs, and disappointments during its explorions of the Red Planet. 1 hr.