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

I’m not saying it’s aliens… but it’s aliens…

It always intrigues me that whenever we see something in the sky that doesn’t meet our existing idea of what’s out there, the first call is ‘ooh – aliens!’ It happened with KIC 8462852, also known as ‘Tabby’s Star’ after the astronomer Tabetha Boyajian – who led the intitial study. This star was exhibiting some … More I’m not saying it’s aliens… but it’s aliens…