Air Force to Launch Missile-Warning Satellite Friday: Watch It Live

A U.S. military satellite designed to detect enemy missiles is scheduled to launch Friday night (Jan. 20), and you can watch the liftoff live online.
If all goes according to plan, a United Launch Alliance (ULA) Atlas V rocket will loft the third Space Based Infrared System (SBIRS) satellite Friday at 7:42 p.m. EST (0042 GMT on Jan. 21) from Florida's Cape Canaveral Air Force Station. ULA will provide a live launch webcast via YouTube, beginning at 7:22 p.m. EST (0022 GMT). You'll also be able to watch the rocket launch here when the time comes, courtesy of ULA.
The launch was scheduled for Thursday night (Jan. 19) but was pushed to Friday because of a sensor issue and the intrusion of an aircraft into restricted airspace.

The aerospace company Lockheed Martin built the satellite, known as SBIRS Geo-3, for the U.S. Air Force. As the name suggests, two other SBIRS spacecraft are already aloft; SBIRS Geo-1 and SBIRS Geo-2 launched in 2011 and 2013, respectively.

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