Cosmic Voyage
Cosmic Voyage is a 1996 short documentary film that explores the scale of the universe from the quantum level to the cosmos.
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The Shrinking Proton: Particle Is Smaller Than Thought
How many protons can dance on the head of a pin? The answer is nowhere near as straightforward as one may think — and it might offer new insights into one of the most well-tested theories in physics. An international team of scientists recently tried to find out the actual size of a proton, one…
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Astronomers Measure Nearby Universe’s ‘Cosmic Fog’
Researchers from the Laboratoire Leprince-Ringuet have carried out the first measurement of the intensity of the diffuse extragalactic background light in the nearby Universe, a fog of photons that has filled the Universe ever since its formation. Using some of the brightest gamma-ray sources in the southern hemisphere, the study was carried out using measurements…
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Astronomers Find Largest Structure in the Universe
An international team of astronomers has found the largest known structure in the universe – a group of quasars four billion light years across. Quasars are the nuclei of extremely ancient galaxies that can flare up brightly, making them visible across huge distances, for comparatively brief period of between 10 and 100 million years. They…
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Gigantic Black Holes Just Got Even Bigger
A number of the largest black holes in the universe may be even bigger than previously thought, researchers say. “Ultramassive black holes — that is, black holes with masses exceeding 10 billion solar masses — are probably not rare; several and even dozens of these colossal black holes may exist,” said Stanford astrophysicist Julie Hlavacek-Larrondo….
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New Maps to Rein in Cosmic Inflation
We’re about to get a better grasp of one of the biggest ideas in the universe: inflation. The first maps of the cosmos from the European Space Agency’s Planck satellite are due out in early 2013. They should help us to hone descriptions of how, after the big bang, the universe grew from smaller than…
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Most Precise Measurement of Universe’s Expansion Achieved
The most precise measurement ever made of the speed of the universe’s expansion is in, thanks to NASA’s Spitzer Space Telescope, and it’s a doozy. Space itself is pulling apart at the seams, expanding at a rate of 46.2 plus or minus 1.3 miles per second per megaparsec (a megaparsec is roughly 3 million light-years)….
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Source of Monster Black Hole’s Energy Jet Identified
A peek at swirling matter around a giant black hole verifies that it is the source of a monstrous blast of energy thousands of light-years long, researchers say. Bursts of energy known as relativistic jets spew out matter at close to the speed of light. These jets can travel across an entire galaxy, suggesting they…
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Astronomers Measure a Black Hole for the First Time
Astronomers have found a way to measure the size of a black hole. Supermassive black holes reside at the center of galaxies and have gravitational forces so strong that nothing, including light, can escape from being pulled into them. By combining the power of radio dishes in three different states into a super-telescope 2,000 times…
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Quasars: Mileposts Marking the Universe’s Expansion
Scientists can’t travel deep space the way Columbus sailed and charted the New World or Lewis and Clark mapped the west. But, researchers at Case Western Reserve University and two partnering institutions have found a possible way to map the spread and structure of the universe, guided by the light of quasars. The technique, combined…