Cosmology, Physics

A thousand years of observations reveal that there are stars that move in the sky and follow patterns, showing that the Earth is part of a solar system of planets separate from the fixed stars. (

Discovery Channel | Scientists have transformed the way we think and live throughout the centuries. What are the most important scientific discoveries of all time? In no particular order, we present the top 100 in eight different categories. (

Anticipation is building in the run-up to presentations of the best-yet evidence for - or against - the existence of the Higgs boson.

The famed particle is a missing link in current theories of physics, used to explain how things gains their mass.

Rumours have been swirling about the findings for weeks, ahead of the announcement on Tuesday afternoon.

It is likely to yield only tantalising hints, as the teams do not have enough data to claim a formal discovery.

National Geographic Death Of The Universe

Mankind has been fascinated with our red planetary neighbor since the dawn of time. Years after the scare caused by Orson Welles' War of the Worlds broadcast, we've dismissed the idea that Mars is inhabited by "little green men". Some imaginative Mars enthusiasts, however, point to the infamous "face" photograph as proof that an advanced race once prospered. Scientists do hold out hope that study of Martian meteorites and probes sent to the planet may uncover evidence of simpler life forms. (

Welcome to the 11th Dimension - The Elegant Universe - PBS NOVA

Part 3 of "The Elegant Universe" with host Brian Greene shows how Edward Witten of Princeton's Institute for Advanced Study, aided by others, revolutionized string theory by successfully uniting the five different versions into a single theory that is cryptically named "M-theory," a development that requires a total of eleven dimensions.

National Geographic presents the first accurate non-stop voyage from Earth to the edge of the Universe using a single, unbroken shot through the use of spectacular CGI (Computer-Generated Imagery) technology. Building on images taken from the Hubble telescope, Journey to the Edge of the Universe explores the science and history behind the distant celestial bodies in the solar system.

In 1964 the Mariner Four spacecraft flew by Mars and got a good look. What it saw looked more like the Moon than the Earth. Then, in the mid-1970's, two lander-orbiter robot teams, named Viking, went in for an even closer look. The landers tested the soil for the chemical residues of life. All the evidence from Viking told us: Mars is dead. And extremely harsh.
n 1080p. Did Mars long ago develop far enough for life to arise? If so, does anything still live within Mars' dusty plains, beneath its ice caps, or somewhere underground?

Why did Earth thrive and our sister planet, Venus, died? From the fires of a sun's birth... twin planets emerged. Then their paths diverged. Nature draped one world in the greens and blues of life. While enveloping the other in acid clouds... high heat... and volcanic flows. Why did Venus take such a disastrous turn?

For as long as we have gazed upon the stars, they have offered few signs... that somewhere out there... are worlds as rich and diverse as our own. Recently, though, astronomers have found ways to see into the bright lights of nearby stars.

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.

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