time

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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Let’s Put a Sailboat on Titan

by Michael Habib April 15, 2014

The large moons orbiting the gas giants in our solar system have been getting increasing attention in recent years. Titan, Saturn’s largest moon, is the only natural satellite known to house a thick atmosphere. It’s surface, revealed in part by the Cassini probe, is sculpted by lakes and rivers. There is interest in exploring Titan […]

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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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From Eternity to Here: The Amazing Origin of our Species (in 90 Seconds)

by Jason Major October 31, 2012

From the initial expansion of the Big Bang to the birth of the Moon, from the timid scampering of the first mammals to the rise — and fall — of countless civilizations, this fascinating new video by melodysheep (aka John D. Boswell) takes us on a breathless 90-second tour through human history — starting from […]

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Astronomy Without A Telescope – Is Time Real?

by Steve Nerlich June 12, 2010

Time is an illusion caused by the passage of history (Douglas Adams 1952-2001). The way that we deal with time is central to a major current schism in physics. Under classic Newtonian physics and also quantum mechanics – time is absolute, a universal metronome allowing you determine whether events occur simultaneously or in sequence. Under Einstein’s […]

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