Crew portrait, STS-109, a Hubble Space Telescope servicing mission which was to be Space Shuttle Columbia’s final successful mission.

Crew portrait, STS-109, a Hubble Space Telescope servicing mission which was to be Space Shuttle Columbia’s final successful mission.

STS-110 saw the first use of newly-enhanced Space Shuttle Main Engines

STS-110 saw the first use of newly-enhanced Space Shuttle Main Engines

Sunrise as seen from Space Shuttle Endeavour’s cargo bay, with the crescent Moon visible, during STS-113

Sunrise as seen from Space Shuttle Endeavour’s cargo bay, with the crescent Moon visible, during STS-113

JoAnn Morgan, NASA’s Director of External Relations and Business Development (right) with STS-112’s Pilot Pam Melroy (left) and Mission Specialist Sandy Magnus (centre), shortly after completion of the mission.

JoAnn Morgan, NASA’s Director of External Relations and Business Development (right) with STS-112’s Pilot Pam Melroy (left) and Mission Specialist Sandy Magnus (centre), shortly after completion of the mission.

Space Shuttle Discovery rolls out to Pad 39-B for STS-116

Space Shuttle Discovery rolls out to Pad 39-B for STS-116

Atlantis approaches the ISS with the P3/P4 truss and solar arrays visible in the cargo bay during STS-115

Atlantis approaches the ISS with the P3/P4 truss and solar arrays visible in the cargo bay during STS-115

Space Shuttle Discovery lands at KSC at the end of STS-105

Space Shuttle Discovery lands at KSC at the end of STS-105

Atlantis docked to the International Space Station during STS-104

Atlantis docked to the International Space Station during STS-104

The STS-106 crew pose for a photograph during their mission

The STS-106 crew pose for a photograph during their mission

Space Shuttle Atlantis lands at the Shuttle Landing Facility, Kennedy Space Center, at the end of STS-101.

Space Shuttle Atlantis lands at the Shuttle Landing Facility, Kennedy Space Center, at the end of STS-101.

STS-102 brought home the first resident crew of the ISS (Expedition 1, lower left) after delivering their replacement Expedition 2 crew (lower right). Centre are the four astronauts who launched and landed with this mission on Space Shuttle Discovery.

STS-102 brought home the first resident crew of the ISS (Expedition 1, lower left) after delivering their replacement Expedition 2 crew (lower right). Centre are the four astronauts who launched and landed with this mission on Space Shuttle Discovery.

Astronauts Steven Smith and John Grunsfeld service the Hubble Space Telescope during STS-103. This was the first of Grunsfeld’s three missions to Hubble, more than any other astronaut.

Astronauts Steven Smith and John Grunsfeld service the Hubble Space Telescope during STS-103. This was the first of Grunsfeld’s three missions to Hubble, more than any other astronaut.