Origins Hubble a view to the edge of space  
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Before objects are sent into space, they are prepared in this clean room, the largest clean room of its kind in the world. It's very important to make sure every item sent into space is clean. Dirt and dust can cause mechanisms to jam or malfunction. Oils and grease can outgas and cover optical surfaces, ruining experiments. Normal air has about 5,000,000 particles per cubic foot; this room has less than 10,000. The pink filters that keep the room clean take up one complete wall. You can see a full-scale model of the back end of the Hubble where astronauts and engineers practice installing experiments. They have just removed the NICMOS chiller, which will be installed later this year (2002). Notice the observation window on the far wall. The silvery-orange rig is the capture ring where Hubble is held during maintenance missions. It is installed in the rear of the space shuttle. The man in the black hat close to the camera (Leon Bailey) is responsible for making sure that everything brought into this room (including the camera used to take these photos) is clean and free of dust. For more information about the clean room, check out Goddard's clean room site.


Origins:Exploratorium:Hubble

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