The most luminous kilonova candidate to date (short gamma-ray burst 200522A) was detected using the Hubble Space Telescope, Swift Observatory and other telescopes. A kilonova is a "the afterglow caused by the radioactive decay of heavy elements unique to the merger of two neutron stars," according to the Harvard & Smithsonian Center for Astrophysics. [Full Story](https://www.space.com/extra-bright-kilonova-from-neutron-star-collision)
Credit: Space.com | animations courtesy: NASA, ESA, and D. Player (STScI) / NASA Goddard Space Flight Center/Chris Smith (USRA) | produced & edited by [Steve Spaleta](http://www.twitter.com/stevespaleta)
Credit: Space.com | animations courtesy: NASA, ESA, and D. Player (STScI) / NASA Goddard Space Flight Center/Chris Smith (USRA) | produced & edited by [Steve Spaleta](http://www.twitter.com/stevespaleta)
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