Τετάρτη 1 Μαρτίου 2017

Cosmic uncertainty: Is the speed of light really constant?

The universe's ultimate speed limit seems set in stone. But there's good reason to believe it might once have been faster – and may still be changing now

from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2lpH5xi
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