‘Doctor Who’ fans, here’s what the ‘sleep’ in your eyes really is

After seeing Sherlock writer Mark Gatiss’s ‘Sleep No More’ episode of Doctor Who last season, did you wonder what the ‘sleep’ in your eyes actually is? Unfortunately it’s not really the Sandmen from Le Verrier Space Station. The clever folks at todayifoundout.com explain that the “sleep” is in fact a type of “rheum”, known as … >

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Watch David Tennant explain Albert Einstein’s theory of relativity

David Tennant narrates a new short film for the Science and Technology Facilities Council celebrating the centennial of Einstein’s theory of General Relativity. The three-minute animated clip features Tennant explaining “what the fuck it’s all about” in case you weren’t paying attention at school. Watch the video…

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‘Earth: The Pale Blue Dot’

What do you get if you combine the words of cosmologist and author Carl Sagan with some stunning time-lapse photography and moody piano-playing? Something bizarre, beguiling and beautiful, that’s what…

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