Astronomy, Space

Almost seven years later, on the first of July 2004, the Cassini probe entered the orbit of Saturn. It then began to compile what has become one of the greatest photographic collections of all time, of a giant gas planet, surrounded by colorful rings, guarded by a diverse collection of moons, and millions of tiny moonlets.

Amazing documentary hosted by Stephen Hawking asking the key question so many people have wondered since the beginning of mankind, does a "god" or a "celestial dictator" exist??

n the beginning, there was darkness, and then, bang—giving birth to an endless, expanding existence of time, space and matter. Now, see further than we've ever imagined, beyond the limits of our existence, in a place we call The Universe.

Discovery documentary about Supermassive Black Holes. A black hole, according to the general theory of relativity, is a region of space from which nothing, including light, can escape. It is the result of the deformation of spacetime caused by a very compact mass. Around a black hole there is an undetectable surface which marks the point of no return, called an event horizon.

Take an astounding look at the red planet in this interplanetary adventure that picks up where the acclaimed film MARS Dead or Alive left off. http://www.pbs.org/wgbh/nova/

For the last 12 years, Carter Emmart has been coordinating the efforts of scientists, artists and programmers to build a complete 3D visualization of our known universe. He demos this stunning tour and explains how it's being shared with facilities around the world.

Scientists studying the problem are looking everywhere from Mars, which suffered a magnetic crisis four billion years ago and has been devoid of a magnetic field, an appreciable atmosphere, and possibly life ever since, to a laboratory at the University of Maryland, where a team headed by physicist Dan Lathrop has re-created the molten iron dynamo at Earth’s.

How solar eruptions could threaten our society.
Watch in 1080p as massive solar eruptions take aim at our high-tech society. 93 million miles away... an angry sun vents its rage. Dark regions, called sunspots, appeared unexpectedly on its surface... a sign of rising tension within. It had been three and a half years since the sun last erupted in fury...at the peak of an 11-year cycle of solar flare-ups.

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. Because nearly all of the sunlight that manages to hit its surface is reflected back into space, its one of the brightest objects in the solar system. It turns out that this distant outpost may harbor subsurface oceans and pre-conditions for life.

BBC documentary 'the Sun' It is dawn and the sun is rising, as it has every day for the past 5 billion years. For millennia it has been a constant golden disc, shining its unchanging light unto the earth. The Sun is the star at the center of the Solar System. It has a diameter of about 1,392,000 kilometers (865,000 mi) (about 109 Earths). About three-quarters of the Sun's mass consists of hydrogen, while most of the rest is helium. Less than 2% consists of other elements, including iron, oxygen, carbon, neon, and others.

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