relativity

The Secret of the Stars

by Jason Major February 27, 2013

Want to stay on top of all the space news? Follow @universetoday on Twitter “Say, do you like mystery stories? Well we have one for you. The concept: relativity.” Well look at that, it’s a new video from John D. Boswell — aka melodysheep — which goes into autotuned detail about one of the standard […]

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Do We Really Need Dark Matter?

by Jason Major December 7, 2012

Hubble mosaic of massive galaxy cluster MACS J0717.5+3745, thought to be connected by a filament of dark matter. Credit: NASA, ESA, Harald Ebeling (University of Hawaii at Manoa) & Jean-Paul Kneib (LAM) Even though teams of scientists around the world are at this very moment hot on the trail of dark matter – the “other stuff” that the […]

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A Star’s Dying Scream May Be a Beacon for Physics

by Jason Major August 13, 2012

When a star suffered an untimely demise at the hands of a hidden black hole, astronomers detected its doleful, ululating wail — in the key of D-sharp, no less — from 3.9 billion light-years away. The resulting ultraluminous X-ray blast revealed the supermassive black hole’s presence at the center of a distant galaxy in March […]

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Data from Black Hole’s Edge Provides New Test of Relativity

by Nancy Atkinson August 2, 2012

From a NASA press release: Last year, astronomers discovered a quiescent black hole in a distant galaxy that erupted after shredding and consuming a passing star. Now researchers have identified a distinctive X-ray signal observed in the days following the outburst that comes from matter on the verge of falling into the black hole. Remove […]

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Astronomy Without A Telescope – Light Speed

by Steve Nerlich October 8, 2011

The recent news of neutrinos moving faster than light might have got everyone thinking about warp drive and all that, but really there is no need to imagine something that can move faster than 300,000 kilometres a second. Light speed, or 300,000 kilometres a second, might seem like a speed limit, but this is just […]

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