http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?docsPerPage%3D100;f18-subject%3DMirror Results for your query: docsPerPage=100;f18-subject=Mirror Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/NASA-JWST/NASA-JWST.dc.xml The JWST will have a large mirror, 6.5 meters (21.3 feet) in diameter. The mirror is being built in segments and will be mounted on a structure that will fold up to fit into a rocket. The mirror will then unfold after launch. In this picture, a team of engineers and technicians from NASA and Ball Aerospace prepare to load three of the JWST mirror segments into a test chamber at NASA’s Marshall Space Flight Center in Huntsville, Alabama. There, they will subject the segments to temperatures reaching minus 414 degrees Fahrenheit -- ensuring the mirror segments can withstand the extreme temperatures of space. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/NASA-JWST/NASA-JWST.dc.xml Thu, 01 Jan 1970 12:00:00 GMT