GZK cutoff

Tag archives for GZK cutoff

“The results of my observation are best explained by the assumption that a radiation of very great penetrating power enters our atmosphere from above.” -Victor Hess You might think of the largest and most powerful particle accelerators in the world — places like SLAC, Fermilab and the Large Hadron Collider — as the source of…

The Cosmic Speed Limit

“All our sweetest hours fly the fastest.” -Virgil 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…