Enormous Galactic Halo Seen Around Colliding Galaxies | Video

The Chandra X-ray Telescope has spied a gas cloud with the mass of ~10 billion Suns and spans ~300,00O light years. The system called NGC 6240 is the scene of two milky way-sized galaxies merging.
credit : NASA/CXC/J. DePasquale
Watch more  ►
Shows