Artist's impression of record-breaking, superluminous supernova ASASSN-15lh

Artist's impression of record-breaking, superluminous supernova ASASSN-15lh 08/04/2017 01:08 PM EDT An artist's impression of the record-breaking, powerful, superluminous supernova ASASSN-15lh as it would appear from an exoplanet located about 10,000 light years away in the host galaxy of the supernova. More about this image Astronomers have witnessed a cosmic explosion about 200 ... This is an NSF Multimedia Gallery item.   Follow NSF:  This email was sent using GovDelivery Communications Cloud on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111