File:Webb Telescope Set for Testing in Space Simulation Chamber (35279234391).jpg
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NASA’s James Webb Space Telescope sits in front of the door to Chamber A, a giant thermal vacuum chamber located at NASA’s Johnson Space Center. The telescope will soon be moved into the chamber, where it will spend a hot Houston summer undergoing tests at sub-freezing cryogenic temperatures. The telescope will operate at an extremely cold 39 K (-234° C or -389° F) in space, so NASA is simulating those conditions on the ground, ensuring the optics and instruments will perform perfectly after launch. In space, the telescope itself must be kept extremely cold, in order to be able to detect the infrared light from faint and very distant objects. To protect the telescope from external sources of light and heat (like the sun, Earth, and moon) as well as from heat emitted by the observatory itself, a five-layer, tennis court-sized sunshield acts like a parasol providing shade. The sunshield separates the observatory into a warm, sun-facing side (reaching temperatures close to 400 degrees Farenheit), and a cold side (185 degrees below zero) where the sunlight is blocked from interfering with the sensitive telescope instruments. The James Webb Space Telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. Webb is an international project led by NASA with its partners, ESA (European Space Agency) and the Canadian Space Agency. For more information about the Webb telescope visit: <a href="http://www.jwst.nasa.gov" rel="noreferrer nofollow">www.jwst.nasa.gov</a> or <a href="http://www.nasa.gov/webb" rel="noreferrer nofollow">www.nasa.gov/webb</a> Image Credit: NASA/Desiree Stover <a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="noreferrer nofollow">NASA Image Use Policy</a> <a href="https://twitter.com/#!/NASAWebb" rel="noreferrer nofollow">Follow us on Twitter</a> <a href="http://www.facebook.com/webbtelescope" rel="noreferrer nofollow">Like us on Facebook</a> <a href="https://www.youtube.com/nasawebbtelescope" rel="noreferrer nofollow">Subscribe to our YouTube channel</a> <a href="http://plus.google.com/+NASAWebbTelescope" rel="noreferrer nofollow">Follow us on Google Plus</a> <a href="http://instagram.com/NASAWebb" rel="noreferrer nofollow">Follow us on Instagram</a> |
| Date | |
| Source | Webb Telescope Set for Testing in Space Simulation Chamber |
| Author | NASA's James Webb Space Telescope from Greenbelt, MD, USA |
Licensing
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This image was originally posted to Flickr by James Webb Space Telescope at https://flickr.com/photos/50785054@N03/35279234391. It was reviewed on 27 December 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:31, 27 December 2021 | | 3,300 × 2,196 (1.83 MB) | Don-vip (talk | contribs) | Transferred from Flickr via #flickr2commons |
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