WATCH LIVE: NASA Discuss Testing On James Webb Space Telescope

NASA officials at Johnson Space Center in Houston discuss the results of recent cryogenic vacuum tests on the James Webb Space Telescope, and the next steps on the observatory’s path to space

Briefing participants are: Ellen Ochoa, Johnson center director and veteran NASA astronaut; Bill Ochs, Webb telescope project manager at NASA’s Goddard Space Flight Center; Jonathan Homan, project manager for Webb telescope Chamber A Test Team at Johnson; and Mark Voyton, Webb telescope Optical Telescope Element and Integrated Science Instrument Module (OTIS) manager at Goddard.