A Dark Energy Camera captures the first-ever historically recorded supernova observed by Chinese astronomers in the year 185 C.E.
In 185 CE , over 1800 years ago, Chinese astronomers witnessed a bright flare in the night sky. This blaring light resulted from a star explosion that took place some 8,000 light-years away. They called it the ‘guest star’. It remained visible to the naked eye for eight months before disappearing into the cosmic abyss.It is said that this supernova, now called SN 185, was most likely the first ever star explosion recorded in history.
The tattered shell-like remnants of SN 185 are called RCW 86. The rest of the area in the image captured is filled with stars. This is helping astronomers better understand how supernovas evolve and expand.The question that boggled the minds of researchers was how did RCW 86 expand so fast.. These supernovas occur at the end of a massive star's lifetime when its nuclear fuel is exhausted, and the release of nuclear energy no longer supports it.
When a Type Ia supernova explodes, its brightness reaches a luminosity billion times that of the Sun. This further confirms SN 185 as a Type Ia supernova because its visual magnitude baffled the Chinese stargazers in 185 CE.
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