Gamma-Ray Bursts (GRBs): Intense explosions observed in distant galaxies that release massive amounts of energy, primarily in the form of gamma rays. Kilonova Explosions (Neutron Star Mergers) : ...
Astronomers, using data from NASA’s Swift Observatory, have identified an extraordinary recurring signal from two massive black holes in a galaxy a billion light-years away. Known as AT 2021hdr, this ...