Atlantis to Launch Tomorrow at 12:29 pm EDT

The Space Shuttle Atlantis is set to (finally) lift off tomorrow, Tuesday, September 6th at 12:29 pm EDT. NASA’s launch blog should begin coverage of the event around 6:30 am tomorrow.

Weather has twice delayed the start of STS-115. Lightning at Kennedy Space Center on August 25th delayed the previously-scheduled launch, and then the Atlantis crew had to wait out the passing of Tropical Storm Ernesto.

The launch of STS-115 will make history when it carries Heidemarie Stefanyshyn-Piper, the first Ukrainian-American into space. (Be sure to check out her biography or this interview.)

As always, we’ll bring you updates on the launch of the Shuttle as the countdown begins.