Re:Sharpest ever view of the Andromeda Galaxy (2015)
by squeaky-clean on Wednesday July 06, 2016 @11:13AM
(#12043593)
Fun NDG quote regarding #1. It's 2.5 million years from our frame of reference, but an instant for the photon.
> Photons have no ticking time at all, which means, as far as they are concerned, they are absorbed the instant they are emitted, even if the distance traveled is across the universe itself.
> Photons have no ticking time at all, which means, as far as they are concerned, they are absorbed the instant they are emitted, even if the distance traveled is across the universe itself.