I learned something new!

Did you know that the tiles on the space shuttle are delicate enough to be crumbled in the human hand? And did you know that objects re-entering the atmosphere are heated by [basically] air pressure as air is compressed in front of the object (as opposed to friction… which would disintegrate the tiles on a space-craft). Did you know that objects that actually hit the ground from space are not actually hot when they land?

Astronomy Pun of the Day: That’s a fact, not friction. stuff taken from here.