Welcome to SpaceTime TV.  Watch educational videos online from full length documentaries to short video clips!

Space How Large is the Universe?  20:13 The universe has long captivated us with its immense scales of distance and time. How far does it stretch? Where does it end and what lies beyond its star fields and streams of galaxies extending as far as telescopes can see? Saturn's Mysterious Moons  18:24 Some 900 million miles from the Sun in the outer regions of our Solar System orbiting the planet Saturnlies a mysterious world. Enceladus is enveloped in ice. Mars World That Never Was  20:13 Just about every two years, the planet Mars makes its closest approach to Earth around 36 million miles. Thats when we pack our robotic emissaries off to the Red Planet, timing their launches to spend the least effort to get there.	Nature The Limits of Endurance  49:16 David Attenborough concludes his series exploring the evolution and behaviour of birds by looking at how birds cope with living in some of the harshest and most bizarre places on the planet. The Demands of the Egg  49:18 David Attenborough explores the extraordinary variety of ways in which birds from all over the world construct their nests and protect their eggs from predators.
Science & Technology The Big Energy Gamble  50:00 Can California's ambitious plan to cut greenhouse gases actually succeed? Hunting the Hidden Dimension  50:00 Mysteriously beautiful fractals are shaking up the world of mathematics and deepening our understanding of nature.	History Ancient Refuge in the Holy Land  54:17 Armed with high-tech equipment and ingeniously improvised devices, NOVA and archaeologist Richard Freund embark on a fascinating detective story that may rewrite Holy Land history. Life and Death in the War Zone  54:24 Treating patients with life-threatening injuries is always a challenge. Now imagine handling a medical emergency at the height of the Iraq War, beset by heat, sand, and frequent enemy attacks. The Spy Factory  50:00 Examine the high-tech eavesdropping carried out by the National Security Agency and the pitfalls of surveillance in an age of terrorism.
Health Marathon Challenge  52:45 Every year thousands of athletes from across the globe flock to Boston to run the city's marathon. The Future Of Food  1:28:54 The Future Of Food offers an in-depth investigation into the disturbing truth behind engineered foods that have quietly filled U.S. grocery store shelves for the past decade. Doctors' Diaries  50:00 Seven doctors, 21 years... Saving lives is only part of the story.	Environment Super Hurricanes  19:37 Why some tropical storms erupt into monster hurricanes capable of wrecking coastlines. Can they be predicted? Extreme Ice  50:00 An acclaimed photographer teams up with scientists to document the runaway melting of arctic glaciers.