The science behind the awesome black hole photograph

It’s been a hot week for science. Thanks to the Event Horizon Telescope, an algorithm created by 29-year old PhD graduate Katie Bouman, and a lot of hard work, humanity got its first photo of a black hole – M87 in the galaxy Messier 87, some 55 million light-years away. It wasn’t made with visible … More The science behind the awesome black hole photograph

How GPS finds you and lets Google send you adverts

If both Special and General Relativity didn’t work precisely as Einstein said it did, GPS would be far less accurate than it actually is. Like, way off, meaning those auto-drive cars wouldn’t even get to the right road. Or any road. And we’d all be lost. Let me explain. GPS works by very precise distance … More How GPS finds you and lets Google send you adverts

The Earth isn’t flat, but the universe might be

One of the great appeals to me of cosmology isn’t so much what we learn about the universe, as what we learn about ourselves. Take the shape of the universe, for example. Cosmologists have long wondered about it. What is the overall structure of the space-time continuum with its myriad galaxies, including ours? The actual … More The Earth isn’t flat, but the universe might be

Two five star reviews for ‘Explaining Our Weird Universe’

My short book Explaining Our Weird Universe 1: cool stuff about time, black holes, and quantum magic has fielded two wonderful five-star reviews on Amazon in quick succession. How cool is that? Because this blog is, you know, all about meeeeeee, I have to tell you about this. Here’s what a ‘Kindle Customer’ had to … More Two five star reviews for ‘Explaining Our Weird Universe’

Bridge building with Albert Einstein and Nathan Rosen. Or, why Stargate can’t happen…

The classical problem with falling into a black hole is a pretty simple one. You don’t come out. Ever. Also, as you go down, you’re turned into spaghetti. Or do you? Albert Einstein’s General and Special Theories of Relativity – both of which have been absolutely proven through every single test ever – tell us … More Bridge building with Albert Einstein and Nathan Rosen. Or, why Stargate can’t happen…