NuSTAR X-Ray Telescope to Launch at Noon Today EDT -- Update

UPDATE: Live audio and video launch coverage is now available at http://www.ustream.tv/nasajpl2 as the aircraft is about to take off from Kwajalein.
ORIGINAL STORY: NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) is currently scheduled for launch at 12:00 pm Eastern Daylight Time (EDT) today. The launch was delayed for about 30 minutes because of a receiver issue that was quickly resolved.
A launch blog is available at the NuStar website. Various people/organizations are tweeting it, including @nasakennedy, @nasajpl, and @NASANuSTAR. NuSTAR will be launched by a Pegasus rocket that is dropped from an L-1011 aircraft. The aircraft is scheduled to depart Kwajalein Atoll in the Pacific Ocean at 11:00 am EDT and will drop the Pegasus about an hour later. Weather is not expected to be a factor today.
NuSTAR is an x-ray telescope that will study celestial phenomena, including x-ray sources at the event horizons of black holes. One cannot see into a black hole, but the material being sucked into the black hole can be observed as it gets very close to that threshold.
Fiona Harrison of CalTech is the principal investigator for the mission. She explained at a press conference on Tuesday that NuSTAR can observe ...