This Shirt Is Blue t-shirt

So if you could run towards this t-shirt with enough speed (And you're going to need to be running pretty face, close to the same speed as a star, so best get those legs warmed up!) you could potentially activate a Doppler shift in the electromagnetic spectrum and cause this red shirt to blue shift! Fascinating right?

So if you’re a bit of a Cosmos geek and want to confuse the hell out of anybody who isn't, then check out this awesome blue t-shirt, only available in red!

We've got loads more other geeky designs to check out - science t-shirts, maths tshirts, IT tees, TV tshirts, movie t-shirts and gamer tees, so no matter what your nerdy poison is, we've got you covered!