NASA telescope may have found antimatter annihilating in possibly the biggest explosion since the Big Bang

A bright silver colored sphere surrounded by a purple glow and with a shaft of purple light erupting from it.

NASA's Fermi gamma-ray space telescope has examined what may have been the most powerful explosion since the Big Bang, discovering a hitherto unseen feature. The feature could be the result of matter and antimatter particles annihilating at 99.9% the speed of light.