April 30, 2013

Why Light Speed Isn't the Cosmic Speed Limit

Ethan Siegel, Starts with a Bang!

AP Photo

If you’ve been around the block once or twice, you know that the speed of light in a vacuum — 299,792,458 meters-per-second — is the absolute maximum speed that any form of energy in the Universe can travel at. In shorthand, this speed is known as c to physicists.

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TAGGED: Light Speed, Cosmic Microwave Background Radiation


October 23, 2013
Light from Early Universe Has a Twist
Megan Gannon, Space.com
Researchers have discovered a subtle twist in the primeval light that formed shortly after the universe came into being. They hope it can reveal new secrets about the moments after the Big Bang. more ››
Speed of light experiments measure the average speed to a destination and back, leaving open the possibility that the speed may differ over each leg. Now Canadian physicists have measured the one-way speed of light to test... more ››