Live coverage: NASA’s ICON satellite successfully launched

Live coverage of the countdown and launch of a Northrop Grumman Pegasus XL rocket with NASA’s Ionospheric Connection Explorer satellite. Text updates will appear automatically below. Follow us on Twitter.

NASA TV’s live video coverage of the Pegasus XL launch with the ICON satellite begins at 9:15 p.m. EDT (0115 GMT). Become a member today and support our coverage.