National Geographic reports:
After more than a quarter-century of planning, designing, building, waiting—and of obsessively testing the most complex space observatory ever assembled—the mammoth James Webb Space Telescope is scheduled to launch at 7:20 a.m. eastern time on December 25.
For JWST’s mission to succeed, the telescope must execute an intricate series of carefully choreographed maneuvers during its first month in space. Even a single misstep could compromise the entire mission. And the telescope must perform its devilishly difficult dance far beyond the reach of human hands, hurtling toward a point in space a million miles away.
The New York Times reports:
The telescope is scheduled to lift off at 7:20 a.m. Eastern time on Saturday from a European-managed spaceport in French Guiana on the coast of South America. The launch window lasts 32 minutes, until 7:52 a.m., in case there are any last-minute rocket checks or brief pauses in the countdown.
NASA, the telescope’s primary backer, will host a livestream on its YouTube channel beginning at 6 a.m., and on its main Twitter and Facebook accounts beginning at the same time. Agency officials will provide commentary with astronomers leading up to the launch. You can also register for a virtual launch event.
We’ll have the live-stream tomorrow morning.
Before the James Webb Space Telescope can #UnfoldTheUniverse, it has to literally unfold. Find mission updates at:
– @NASAWebb (play-by-play)
– https://t.co/sGBPzkchmf (milestones)
– @NASA (livestreams)
– https://t.co/ht9HRe1k1U (major news)Timeline: https://t.co/aY8ybuWvnW pic.twitter.com/NhMkZiFWH6
— NASA (@NASA) December 21, 2021
The Ariane 5 rocket sits ready to launch @NASAWebb from Europe’s Spaceport in French Guiana, targeted for Dec. 25 at 7:20am ET (12:20 UTC). More 📷 https://t.co/zgADMGGN6I pic.twitter.com/abEy6OiKxr
— NASA HQ PHOTO (@nasahqphoto) December 24, 2021
Join the worldwide virtual Webb launch watch party 🥳
Our launch broadcast begins at 6 am ET (11 UTC) on Dec. 25. Watch LIVE on @NASA’s Twitter or any of our other streaming channels. More ways to help us #UnfoldTheUniverse: https://t.co/mCmRPjeJMe pic.twitter.com/NDwgPu88fn
— NASA Webb Telescope (@NASAWebb) December 23, 2021
Let’s rock(et) and roll(out)! 🚀
We’ve started to roll out the Webb telescope and its launch vehicle – an @Ariane5 rocket – to the launch pad. The process should take about 2 hours. Launch is set for Dec. 25 at 7:20 am ET (12:20 UTC): https://t.co/CmKf8i276l #UnfoldtheUniverse pic.twitter.com/eXulUtIjPQ
— NASA Webb Telescope (@NASAWebb) December 23, 2021