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Housing and Development Newsletter The team found the supernova SN 2018zd had many unusual characteristics, some of which were seen for the first time in a supernova. It helped that the supernova was relatively nearby — only 31 million light-years away — in the galaxy NGC 2146. This allowed the team to examine archival images taken by the Hubble Space Telescope prior to the explosion and to detect the likely progenitor star before it exploded. The observations were consistent with another recently identified SAGB star in the Milky Way, but inconsistent with models of red supergiants, the ...

30 JUNE 2021 Way back in 1054 CE, a supernova stellar explosion lit up the skies with enough brightness that it could be seen from from Earth during the daytime, for 23 days straight. Its remnants still exist today as the Crab Nebula, and new research gives us our best idea yet of exactly what happened to cause such a phenomenon.   Based on an analysis of a more recent supernova labeled SN 2018zd, astronomers think both SN 2018zd and the 1054 CE supernova are electron-capture supernovae – a rare third type of supernova alongside type I (thermonuclear) and type II (core collapse). Experts ...