For space shuttle Endeavour, Monday morning will be déjà vu all over again — with one major difference.

U.S. Rep. Gabrielle Giffords, the wounded Arizona congresswoman, will be back at Kennedy Space Center to watch her husband, Navy Capt. Mark Kelly, attempt his fourth spaceflight. A new switch box will be in place of the faulty one that held up the previous launch attempt April 29. And the $2 billion astrophysics experiment that is the principal reason for this trip to the International Space Station will be safely stowed.

Only President Barack Obama and his family, who came to KSC to watch the last launch, will be missing as Endeavour attempts its 25th — and final — liftoff into low Earth orbit.

Read updates leading up to today’s launch on the Write Stuff space blog