SpaceX rocket explodes after liftoff

An unmanned SpaceX rocket carrying supplies and the first-of-its-kind docking port to the International Space Station broke apart yesterday shortly after liftoff.

It was a severe blow to NASA, still reeling from previous failed shipments.

The accident occurred about 2 1/2 minutes into the flight from Cape Canaveral, Florida. Pieces could be seen falling into the Atlantic. More than 5,200 pounds of space station cargo were on board, including the first docking port designed for future commercial crew capsules.