These Mirrors Are Part Of The Biggest Space Telescope

A giant robotic arm practiced hanging silver and gold mirrors on the backbone of the James Webb Space Telescope, then a human engineer carefully checked its work. Eventually, the full telescope will be launched into space, then unfold in a delicate choreography of inverse origami. » 10/11/14 5:07pm 10/11/14 5:07pm

Why do mirrors reverse left and right, but not top and bottom?

Position yourself in front of a mirror and you'll notice it immediately. The text on your sweatshirt is reversed. The part in your hair has switched to the other side of your reflection's head. The mole on your left ear stares back at you from your mirror image's right earlobe. Before you stands a bauplan reversed;… » 12/26/12 11:09am 12/26/12 11:09am