From WBOC Metr. Dan Satterfield at the Kennedy Space Center
The weather looks good, and fueling of the Atlas 5 booster is underway here at the Kennedy Space Center. The weather is warm and breezy, with temperatures near 76 degrees. A cold front is approaching, but few if any clouds are expected with it. The launch is set for 5:42 PM EST, which is about 15 minutes after sunset. The vapor trail behind the rocket will climb into the sunlight, and they often light up in the colors of the rainbow as the sun sets in the stratosphere.
The NASA Science briefing from Thursday is below. Watch to understand why this is such an important science event. You may see a familiar face too ;).