Gamma rays are the shortest wavelength electromagnetic waves, containing the most energy, and come … [+] from stars exploding as supernovae. getty A massive burst of gamma rays produced by the explosion of a star almost two billion light-years away was so powerful that it changed Earth’s atmosphere, according to scientists. Gamma rays are the …
The Neil Gehrels Swift Observatory’s X-Ray Telescope captured the afterglow of the Brightest of All Time gamma-ray burst. [+] NASA/Swift/A. Beardmore (University of Leicester) A self-destructing star in the Pinwheel galaxy has produced a supernova called Supernova 2023ixf, which shines as brightly as 100 billions suns. However, this is not the biggest cosmic explosion event. …
This image shows the aftermath of the accretion of a star by a supermassive black hole. Black holes … [+] such as these lurk at the centres of many, if not all, galaxies, and can weight in at anything from a few tens of thousands to several billion times the mass of a single star. …