Watch a sidewalk astronomer Putlocker. John Dobson, an 89 year old with a white ponytail and knack for comedy, is the inventor of the Dobsonian telescope mount, which revolutionized astronomy by making large, inexpensive telescopes and deep space observing available to amateur astronomers around the world.
7.21991HD
This shows physicist Stephen Hawking's life as he deals with the ALS that renders him immobile and unable to speak without the use of a computer....
02016HD
Three billion miles away a grand-piano-sized spacecraft is speeding through the outer solar system at nearly 1,000 miles per minute. After nearly a...
82023HD
A look at the Sun, the star that revolves at the center of the Solar System, and its representation in art throughout history.
4.52003HD
A BBC documentary uncovers, for the first time, the original manuscript where Newton forecast the date of the end of the world. Newton, the father...
81999HD
Chaco Canyon, located in northwest New Mexico, is perhaps the only site in the world constructed in an elaborate pattern that mirrors the yearly...
6.82019HD
A team of international scientists attempt to document the first-ever image of a black hole.
02021HD
China's FAST (Five-hundred-meter Aperture Spherical Telescope) can detect radio signals emitted tens of thousands of light-years away, and engineers...
7.12022HD
Does infinity exist? Can we experience the Infinite? In an animated film (created by artists from 10 countries) the world's most cutting-edge...
6.41874HD
Photo sequence of the rare transit of Venus over the face of the Sun, one of the first chronophotographic sequences. In 1873, P.J.C. Janssen, or...
82022HD
The Hubble Space Telescope has spent more than 30 years scrutinizing the cosmos in an attempt to unravel the secrets of the Universe and go as close...
7.42008HD
At 7:14 am on 30 June 1908, the largest explosion recorded in human history to date reverberated throughout our planet. The force of the explosion...
52009HD
A documentary chronicling the history of the telescope from the time of Galileo. Featuring interviews with leading scientists discussing Galileo's...