. If bad weather around the Vandenberg launch site prompts a delay the next opportunity for liftoff would be about 24 hours later. Replay on YouTube NASA JPL.

Watch the launch of the James Webb Space Telescopethe most powerful space telescope ever made. - ISS Expedition 65 in-flight educational event with the Lake Highland High School in Orlando Florida and NASA astronaut Megan McArthur and ISS Commander Aki Hoshide of the Japan Aerospace Exploration Agency JAXA YouTube. 11 2021 photo released by the European Space Agency NASAs James Webb Space Telescope is secured on top of the Ariane 5 rocket that will launch it to space from Europes.

UTC-4 August 20 Friday.

Watch the launch of the James Webb Space Telescopethe most powerful space telescope ever made. If bad weather around the Vandenberg launch site prompts a delay the next opportunity for liftoff would be about 24 hours later. Replay Webinar NASA JPL. This mission is scheduled to lift off at 720 am.