GROUNDED!!!!

Well that didn't take long... Discovery hasn't even been in orbit for 48 hours and NASA has grounded the shuttle fleet AGAIN!

According to MSNBC at a press conference this evening, NASA has announced that a rather sizeable chunk of foam fell away from the external fuel tank... It was a big enough piece that if it had hit the orbiter as it fell away it would have caused significant damage.

Talk about a blow to the program. After two years of intense troubleshooting to resolve this problem, a problem that they've been trying to figure out for probably close to 10 years before the Columbia accident, only to have it crop up again when they thought they had it resolved.