#Atlantis in head down and heading to orbit! #STS135 #nasatweetup

The last shuttle launch. #Atlantis in the first few seconds of #STS135 flight. #NasaTweetUp

#Atlantis soars past the #NASA Flag. #STS135 #NASATweetUp

And #Atlantis Clears the Tower!! #STS135 #NASATweetUp

During the lift in the VAB last month as #Atlantis was mated to her stack. #STS135 #nasatweetup

L-1 for #STS-135 and #Atlantis. This was just after RSS rotation this afternoon. #nasatweetup

Another view of the Payload Canister and #Atlantis at LC39A one final time. #STS135 #nasatweetup

Canister with the payload arrived @ LC39A on June 17th; installed in #Atlantis for #STS135 #nasatweetup

The Payload Bay Doors of #Atlantis are closed for flight! #STS135 #nasatweetup

Discovery touches down on runway 15 at KSC at 11:57am. #STS133 #NASA

Gear Down. Final Approach. #STS133 #Discovery #NASA

Discovery returns to KSC for the last time! Gear Doors opening. #STS133

The Stars and Stripes with the #NASA and #Discovery flags. #STS133

Solid Rocket Booster Separation #STS133

Shuttle #Discovery making the 8.5 minute journey to Space. #STS133

And #Discovery clears the tower! Last time we will hear those words. #STS133

#Discovery is "heads down" and heading out over the Atlantic. #STS133

Launch of Shuttle #Discovery for one last flight! #STS133

Close up of #Discovery Logo and #NASA Meatball on the wings. #STS133 #NasaTweetup

Another photo after RSS rotation #STS133 #nasatweetup