The Universe

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Which way do comets tails face? Does dark matter exist? Where did the universe come from and what is it made of? What's at the end of the universe? Dr Paul Francis discusses some of the 'greatest unsolved mysteries of the universe' at The Australian National University on 31 March 2010. This talk will explore the greatest unsolved problems of modern astrophysics, describe why they are hard, and discuss the efforts being made to solve them. Paul Francis is an astronomer at The Australian National University. He conducts research on comets, quasars, high redshift galaxies, and novel interactive teaching techniques. He grew up in London, studied at Cambridge and has worked with the Steward Observatory in Tucson, Arizona, with the University of Melbourne, and has been based at ANU since 1997.

The estimated diameter of the observable universe is about 93 billion light years or 28 billion parsecs. Scientific observation of the Universe has led to inferences of its earlier stages, which appear to have been governed by the same physical laws and constants throughout most of its extent and history. The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe, which is estimated to have begun 13.798 ± 0.037 billion years ago. Scientists remain unsure about what, if anything, preceded the Big Bang. Many refuse to speculate, doubting that any information from any such prior state could ever be accessible. There are various multiverse hypotheses, in which some physicists have suggested that the Universe might be one among many, or even an infinite number, of universes that likewise exist. 

Journey to the Edge of the Universe

The "Journey to the Edge of the Universe" documentary film broadcast on National Geographic and Discovery Channels. It documents a space journey from Earth to the edge of the universe itself. The US edition was narrated by Alec Baldwin, the UK edition by Sean Pertwee.  Using one single, unbroken shot, Journey to the Edge of the Universe explores what we would find if we were able to travel the entire length of our universe. Venturing past Neil Armstrong's footsteps still sealed on the moon, the special soars over brightly illuminated Venus onto Mercury, a small planet made almost entirely of iron that may perhaps be the left-over remnants of a much larger planet. 

This is a documentary which portrays the birth of the solar system, the birth of the Earth, and the emergence and evolution of life on Earth depicted through latest research activities. Executive producer: prof. Shigenori Maruyama. Supported by Hadean Bioscience Project.

Looking for a fast track to comprehensive education on the Electric Universe? Those most eager to learn are invited to the EU Workshop, November 14-16, 2014 at the Sheraton Phoenix Downtown. This event will be led by Wal Thornhill and Dave Talbott, who are preparing full summaries of their life's work, something that has never been presented publicly. Wal's talks will be complemented by additional material from electrical theorist Dr. Donald Scott, and Dave's presentations will be reinforced by Ev Cochrane, author of several essential books on the ancient sky. 

Neutron stars are one of the possible evolutionary end-points of high mass stars. They're born in a core-collapse supernova star explosion and subsequently rotate extremely rapidly as a consequence of their physics. Neutron stars can rotate up to 60 times per second after born. Under special circumstances, this rate can increase to more than 600 times per second.

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The Big Crunch, as you might have guessed, is the Big Bang's opposite. All that matter expanding outward at the edges of the universe is being affected by our universe'sgravity. According to this theory, gravity willeventually cause this expansion to slow to the point where it halts and begins to contract instead.