relativity

Does Light Experience Time?

by Fraser Cain May 7, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter Have you ever noticed that time flies when you’re having fun? Well, not for light. In fact, photons don’t experience any time at all. Here’s a mind-bending concept that should shatter your brain into pieces. Remove this ad Fraser Cain on […]

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The Secret of the Stars

by Jason Major February 27, 2013

“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 principles of astrophysics, Einstein’s theory of general relativity. Featuring clips from Michio Kaku, Brian […]

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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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