We have scientists and engineers ready to answer your questions about our cryogenic testing of the James Webb Space Telescope. Why so cold? What kind of testing are we doing? How will this prepare us for being in space? The thread for your questions is now up, so go ask them HERE: https://www.reddit.com/r/science/comments/77dwwk/we_are_scientists_and_engineers_testing_nasas/We'll start answering them at around 1pm ET.
Posted by NASA's James Webb Space Telescope on Thursday, October 19, 2017
