Space is the boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime. In mathematics one examines 'spaces' with different numbers of dimensions and with different underlying structures. The concept of space is considered to be of fundamental importance to an understanding of the physical universe although disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.
Excerpt from Wikipedia
Explore the cosmos, the planets and space travel with our wonderful range of Space Documentaries to watch online and streaming free!
The earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that in glory and triumph, they can become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on this scarcely distinguishable...
The Universe is still a place of mystery and wonder. As a cosmologist, I am exhilarated that we can make some progress towards tackling what seem very fundamental questions. These programs focus on: Was there a beginning? Whether we are alone? What’s the future of the cosmos? What is the nature of reality? With each advance, new questions come...
Professor Jim Al Khalili delves into over 50 years of the BBC science archive to tell the story behind the emergence of one of the greatest theories of modern science, the Big Bang. The remarkable idea that our universe simply began from nothing has not always been accepted with the conviction it is today and, from fiercely disputed leftfield...
We journey half a billion miles from the earth’s surface to a mini solar system of over 60 moons rotating around a powerful planet of gas. Its flowing colors and spots hold strange beauty, but contain violent storms and jet streams. Could this big, bright ball of turbulent weather have been the star of Bethlehem? Could one of its moons harbor...
We can’t compare anything on earth to the biggest things known in space. The Lymann Alpha blob is a bubble like structure containing countless galaxies, perhaps the biggest object in the entire universe. Regions of radio emitting gas called “radio lobes” could be even bigger. Then there are super galaxy clusters which are hundreds of...
Particle physicist Professor Brian Cox asks, ‘What time is it?’ It’s a simple question and it sounds like it has a simple answer. But do we really know what it is that we’re asking? Brian visits the ancient Mayan pyramids in Mexico where the Maya built temples to time. He finds out that a day is never 24 hours and meets Earth’s very own...
A voyage through space and time with Professor Stephen Hawking. The series charts Professor Hawking’s quest for a ‘Theory of Everything’. This ‘holy grail’ hypothesis could explain everything from the mysteries of unimaginably vast phenomena such as supernovae, black holes and dark matter, to the secrets of an infinitesimally small...
Approximately 5 billion years old and just under 333,000 times the mass of Earth, discover the enchanting story of the Sun, the heart of our solar system and the driving force of life on Earth. The Sun is by far the brightest object in the sky. It’s so bright that during the day its light drowns out virtually everything else in space. The Sun is...
A Brief History of Time attempts to explain a range of subjects in cosmology, including the Big Bang, black holes and light cones, to the nonspecialist reader. Its main goal is to give an overview of the subject but, unusual for a popular science book, it also attempts to explain some complex mathematics. The author notes that an editor warned him...
A fantastic Horizon (one of my favorites) that looks into the research on Dark Matter (with a twist of comedy to it!)… We know what 4% of the Universe is made of. But what about the rest? There was a time, not so long ago, when science seemed to understand how the universe worked. Everything – us, the Earth, the stars and even exotic-sounding...
Only a man with the brain the size of Stephen Hawking’s would seriously accept the challenge of answering the question How did the universe begin? in less than 30 minutes, while making it accessible for the population at large. Hawking’s lecture is a masterclass in concision and clear thinking. He spins through the history of thought on the...
ESA’s anniversary DVD film Hubble – 15 years of discovery covers all aspects of the Hubble Space Telescope project – a journey through the history, the troubled early life and the ultimate scientific successes of Hubble. This portrait, directed by Lars Lindberg Christensen, contains large amounts of previously unpublished footage of superb...
Astronomers are closing in on the proof they’ve sought for years that one of the most destructive objects in the universe – a super massive black hole – lurks at the center of our own galaxy. Could it flare up and consume our entire galactic neighbourhood? NOVA takes us on a mind-bending investigation into one of the most bizarre corners of...
Like the plot of a sci-fi B movie, something weird is happening deep underground where the constant spin of Earth’s liquid metallic core generates an invisible magnetic force field that shields our planet from harmful radiation in space. Gradually, the field is growing weaker. Could we be heading for a demagnetized doomsday that will leave us...
This documentary investigates one of the most controversial questions of the past hundred years… are we alone in the universe? This is not one those films that claims to have conclusive proof, but rather a look at the serious science of the search for extraterrestrial life. The search for extra-terrestrial life has been going for 50 years –...
In June 2000, astronomers made an extraordinary discovery. One that promises to solve one of the biggest problems in cosmology – how and why galaxies are created. Incredibly, the answer involves the most weird, destructive and terrifying objects in the Universe – supermassive black holes. Scientists are beginning to believe that these forces...
After 40 years, man is preparing to return to the Moon. But this time the astronauts won’t just land on the Moon – they plan to stay. From his office in Nevada, Dennis Hope has spawned a multi-million dollar business selling lunar real estate. But scientists believe the real prize is trapped in the Moon’s rocks. It contains large deposits of...
Scorched by their proximity to the sun, Mercury and Venus are hostile worlds. One gouged with craters from cosmic collisions and the other a vortex of sulfur, carbon dioxide and acid rain. Prime examples of planets gone awry, do they serve as a warning for ominous scenarios that might someday threaten Earth? Cutting-edge computer graphics are used...
Without the moon, humans wouldn’t exist. Life, if it had started at all, would be in the earliest stages of evolution. Days would last four hours, winds would blow at hurricane force and there would be a dense and toxic atmosphere resembling that of Venus. Luckily, 50 million years after the formation of the solar system, our proto-planet was...
A stellar explosion, the supernova is the sensational death of a star. It can shine as bright as 100 billion Suns and radiate as much energy as the Sun would emit over 10 billion years. Jets of high-energy light and matter are propelled into space and can cause massive Gamma Ray Bursts and emit intense X-ray radiation for thousands of years....
250 million years ago, long before dinosaurs roamed the Earth, the land and oceans teemed with life. This was the Permian, a golden era of biodiversity that was about to come to a crashing end. Within just a few thousand years, 95% of the lifeforms on the planet would be wiped out, in the biggest mass extinction Earth has ever known. What natural...
The great PBS science series Nova scores another hit with Mars: Dead or Alive, capturing all the excitement surrounding the Mars rover landings of early 2004. Originally broadcast just as the first of the twin rovers (“Spirit” and “Opportunity”) was experiencing temporary communication problems with Earth-bound mission controllers, this...
On January 3, 2004, a compact rover named Spirit, cushioned inside a pyramid of balloons, hurtled through the martian atmosphere and crash-landed on the dusty surface of Mars. Minutes later, Spirit sent its first message home. The elation of the assembled scientists, along with the much more involved engineering story leading up to the landing,...
The Mandelbrot set – someone has called it the thumb-print of God – is one of the most beautiful and remarkable discoveries in the entire history of mathematics. With Arthur C. Clarke as narrator and interviews with a number of notable mathematicians, including Benoît Mandelbrot, this program graphically illustrates how simple formulas can...
For centuries scientists and philosophers have marveled at an eerie coincidence. Mathematics, a creation of human reason, can predict the nature of the universe, a fact physicist Eugene Wigner referred to as the “unreasonable effectiveness of mathematics in the physical sciences.” In the last three decades astronomers and cosmologists have...