A map from the National Oceanic and Atmospheric Administration shows tomorrow night's aurora forecast. NOAA Coronal holes form in the outermost ... and soft X-ray images of the sun.

Tonight, the aurora may be visible across Alaska ... The northern lights form when solar wind particles excite atoms in the Earth's upper atmosphere, causing them to glow. Aurorae appear as ...

The rival to Philips' X-ray technology program hired three engineers away from Philips, Chin-Yee Jen, 69, of Mequon, Wis., Fince Tendian, 56, of Aurora and Vladimir Nevtonenko, 76, of Arlington ...