
Space Shuttle Discovery during rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA, 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers. Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER

Space Shuttle Discovery sits in the VAB before starting its rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA, 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers (the repaired stringers and stiffener are found under the white band at top of intertank). Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER

Space Shuttle Discovery sits in the VAB before starting its rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA. 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers. Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER

Space Shuttle Discovery sits in the VAB before starting its rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA, 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers. Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER

Space Shuttle Discovery during rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA, 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers. Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER

Space Shuttle Discovery during rollout from the Vehicle Assembly Building at Kennedy Space Center, Cape Canaveral, Florida, USA, 31 January 2011. This is the second attempt of the last rollout for Shuttle Discovery in the Space Shuttle Program. Shuttle Discovery was moved back to the VAB after cracks were found in the external tank stringers. Discovery is scheduled to make its final launch to the International Space Station 24 February 2011. EPA/JUSTIN DERNIER