Timer, Mission, Shuttle

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    Timer, Mission, Shuttle

    Mission clock was flown and used to track how many days-hours-minutes the orbiter was in space. It is an aluminum housing with acrylic window and blue Velcro attached to the front.

    1 of 2

    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Timer, Mission, Shuttle

    Mission clock was flown and used to track how many days-hours-minutes the orbiter was in space. It is an aluminum housing with acrylic window and blue Velcro attached to the front.

    2 of 2

Display Status:

This object is on display in the Moving Beyond Earth exhibition at the National Air and Space Museum in Washington, DC.

At orbital speed, spacecraft circle the Earth every 90 minutes, with a sunrise or sunset every 45 minutes, making it difficult to keep track of time as usual. Time in space is tracked more than one way. Astronauts sometimes wear more than one wristwatch, one set to Houston time and another set to mission time. This is a mission timer that is started at launch and stopped at landing. It shows how much time has elapsed since the mission began. Mission elapsed timers like this are located in the spacecraft and Mission Control Center, and also in the Press Center, so everyone knows how far into the mission they are, when scheduled events will happen, and when it's time to sleep and wake. Events that happen in space are typically recorded in mission elapsed time (MET). NASA gave this timer to the Museum when it was no longer needed on the Space Shuttle.