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Video archive

Endeavour to the VAB

For its role as a rescue craft during the Hubble servicing mission and the scheduled November logistics run to the space station, Endeavour is moved to the Vehicle Assembly Building.


STS-125: The mission

A detailed step-by-step preview of space shuttle Atlantis' STS-125 mission to extend the life and vision of the Hubble Space Telescope.


STS-125: The EVAs

The lead spacewalk officer provides indepth explanations of the five EVAs to service Hubble during Atlantis' flight.


STS-125: The crew

The seven shuttle Atlantis astronauts hold a press conference one month before their planned launch to Hubble.


STS-125: NASA leaders

The leaders of NASA's Space Operations and Science directorates give their insights into the upcoming shuttle mission to the Hubble Space Telescope.


STS-125: Shuttle boss

The head of NASA's space shuttle program discusses the risks and plans for Atlantis' trek to Hubble.


The Hubble program

An overview of the Hubble Space Telescope program and the planning that has gone into the final servicing mission.


Hubble's future science

The new instruments to be installed into Hubble and the future science objectives for the observatory are previewed.


Atlantis on the pad

Shuttle Atlantis makes the slow journey from the Vehicle Assembly Building to launch pad 39A for the STS-125 mission to service Hubble.


Meet the Hubble crew

Meet the crew launching on Atlantis' STS-125 mission to service the Hubble Space Telescope and learn how each became an astronaut in this special biography movie.


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List of space shuttles occupying both launch pads
Updated: April 15, 2009

Shuttle Discovery stands on pad 39B (left) and Columbia occupies pad 39A in this 1990 photo. Credit: NASA
Over the history of NASA's space shuttle program, it has been a rarity for both launch pads at Complex 39 to be occupied at the same time.

When space shuttle Endeavour moves to pad 39B on Friday to begin its role as a rescue vehicle for Atlantis' mission to the service the Hubble Space Telescope, it will mark just the 19th time that two flight-ready orbiters will be standing on the dual seaside pads.

An even more seldem event is two orbiters being fully visible on the launch pads simultaneously. A famous photo illustrating the view to behold when both rotating service gantries are opened to expose the orbiters can be seen above.

Here is a list of the previous times space shuttles have occuppied both launch pads:

  • 1. STS-61C (Columbia) and STS-51L (Challenger)

    - Dec. 22, 1985 (rollout of 51L to Pad B)
    -Jan. 12, 1986 (launch of 61C from Pad A)

  • 2. STS-31 (Discovery) and STS-35 (Columbia)

    - April 22, 1990 (rollout of STS-35 to Pad A)
    -April 24, 1990 (launch of STS-31 from Pad B)

  • 3. STS-35 (Columbia) and STS-41 (Discovery)

    - Sept. 4, 1990 (rollout of STS-41 to Pad B)
    -Oct. 6, 1990 (launch of STS-41 from Pad B)

  • 4. STS-38 (Atlantis) and STS-35 (Columbia)

    - Oct. 14, 1990 (rollout of STS-35 to Pad B)
    -Nov. 15, 1990 (launch of STS-38 from Pad A)

  • 5. STS-37 (Atlantis) and STS-39 (Discovery)

    - April 1, 1991 (rollout of STS-39 to Pad A)
    -April 5, 1991 (launch of STS-37 from Pad B)

  • 6. STS-45 (Atlantis) and STS-49 (Endeavour)

    - March 13, 1992 (rollout of STS-49 to Pad B)
    -March 24, 1992 (launch of STS-45 from Pad A)

  • 7. STS-50 (Columbia) and STS-46 (Atlantis)

    - June 11, 1992 (rollout of STS-46 to Pad B)
    -June 25, 1992 (launch of STS-50 from Pad A)

  • 8. STS-56 (Discovery) and STS-55 (Columbia)

    - Feb. 7, 1993 (rollout of STS-55 to Pad A)
    -April 8, 1993 (launch of STS-56 from Pad B)

  • 9. STS-64 (Discovery) and STS-68 (Endeavour)

    - Aug. 19, 1994 (rollout of STS-64 to Pad B)
    -Aug. 24, 1994 (rollback to VAB of STS-68 from Pad A)

  • 10. STS-71 (Atlantis) and STS-70 (Discovery)

    - May 11, 1995 (rollout of STS-70 to Pad B)
    -June 8, 1995 (rollback to VAB of STS-70 from Pad B)

  • 11. STS-71 (Atlantis) and STS-70 (Discovery)

    - June 15, 1995 (rollout of STS-70 to Pad B)
    -June 27, 1995 (launch of STS-71 from Pad A)

  • 12. STS-70 (Discovery) and STS-69 (Endeavour)

    - July 6, 1995 (rollout of STS-69 to Pad A)
    -July 13, 1995 (launch of STS-70 from Pad B)

  • 13. STS-69 (Endeavour) and STS-73 (Columbia)

    - Aug. 28, 1995 (rollout of STS-73 to Pad B)
    -Sept. 7, 1995 (launch of STS-69 from Pad A)

  • 14. STS-73 (Columbia) and STS-74 (Atlantis)

    - Oct. 12, 1995 (rollout of STS-74 to Pad A)
    -Oct. 20, 1995 (launch of STS-73 from Pad B)

  • 15. STS-95 (Discovery) and STS-88 (Endeavour)

    - Oct. 21, 1998 (rollout of STS-88 to Pad A)
    -Oct. 29, 1998 (launch of STS-95 from Pad B)

  • 16. STS-103 (Discovery) and STS-99 (Endeavour)

    - Dec. 13, 1999 (rollout of STS-99 to Pad A)
    -Dec. 19, 1999 (launch of STS-103 from Pad B)

  • 17. STS-104 (Atlantis) and STS-105 (Discovery)

    - July 2, 2001 (rollout of STS-105 to Pad A)
    -July 12, 2001 (launch of STS-104 from Pad B)

  • 18. STS-125 (Atlantis) and STS-126 (Endeavour)

    - Sept. 19, 2008 (rollout of STS-126 to Pad B)
    -Oct. 20, 2008 (rollback to VAB of STS-125 from Pad A)