Two days after Christmas 2004, spacecraft detected a giant flash of energy from thousands of light years away – the biggest, brightest explosion astronomers had ever seen. What was it?

Grote Reber

Ear-catching modular programs bringing the space-age science of radio astronomy down to earth!  In celebration of its 50th Anniversary, the National Radio Astronomy Observatory brings you a series of brief insights into the fascinating world of deep space.  Tune into the Universe with Cosmic Radio!