Why does the James Webb Space Telescope have to be so cold? How are we testing it? Your questions answered on Oct 19, 1pm ET, in the Science Sub-reddit. (https://www.reddit.com/r/science/)Start thinking up your questions now, but save them for Reddit for next week! We'll be sure to post a link to the Q&A thread once it goes live so you can ask them there. We'll have NASA Goddard engineers and scientists who are leading our testing at NASA Johnson on hand to provide answers!
Posted by NASA's James Webb Space Telescope on Friday, October 13, 2017
