HOUSTON (AP) — NASA is prepping for the last space shuttle launch -- Atlantis -- and that means changes for the Houston area.The end of the shuttle program is hitting its Florida launch home in the pocketbook with some areas practically becoming economic ghost towns.But Houston, home of Mission Control, is getting hit somewhere else: in the ego.Then-President George W. Bush in 2004 announced the planned end of the shuttle program. Then in 2010, President Barack Obama canceled the over-budget Houston-centric shuttle replacement program. Obama proposed going to an asteroid in a plan that's currently less detailed.A recent space agency report found NASA's economic impact in Texas was $6.5 billion last year -- with $2 billion linked to shuttles.