Watch the James Webb Space Telescope launch at 7:20 AM ET

After far too many delays over the years to count, NASA's James Webb Space Telescope has a launch date. Provided there's not another last-minute setback, the successor to Hubble Space Telescope is scheduled to take flight on Saturday, December 25th. NASA expects the Ariane 5 rocket carrying the JWST to lift off no earlier than 7:20AM ET on Christmas Day from the Guiana Space Center in Kourou, French Guiana. You can watch the entire event unfold, beginning with pre-launch coverage, starting at 3A...