Endeavour was launched into space today for the last time ever. Prayers don't shoot shuttles into space, though: Hurtling Endeavour and its crew 28 miles straight up were a pair of 1.3-million-pound reusable solid rockets.
...but it's actually very safe! And yes, NASA has a railroad. It's been around since 1963, actually—so apologies to space nuts who've known about it for a while—but only recently has the agency uploaded an expose to YouTube.
I still can't believe this is the first up-close, 480p video of NASA retrieving the space shuttle's two solid rocket boosters (SRBs) from the Atlantic Ocean, and yet it is! The SRBs are, in a word, massive. And they float!