HomeAstronomyAncient 'guest star' may mark rare collision of stellar corpses

Ancient ‘guest star’ may mark rare collision of stellar corpses

Centuries after Chinese and Japanese astronomers spotted a bright light in their skies, astronomers have pinned it to a stellar collision that unleashed a rare supernova 850 years ago. 

A researcher has photographed the structure of Pa 30, a faint but fast-expanding nebula that surrounds one of the Milky Way‘s hottest stars. The new observations find that both the nebula and the star are remnants of a rare type of stellar collision. In addition, astronomers have calculated the nebula’s age more precisely, confirmed the speed of its winds and concluded that Pa 30 really is, as suspected, the remains of the “guest star” spotted by stargazers and astronomers in 1181 AD.

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