Supernova That Stunned Stargazers In The Year 1181 Has Finally Been Found â And Itâs A âZombieâ Star
The Chinese have a long, ancient history of recording âguest starsââsuddenly bright stars that appear in the sky for a while but then dim and disappear. Today we know these are rare, incredibly energetic supernova explosions from either massive stars or special, interacting binary systems that seed the Galaxy with heavy elements like iron and […]
EarthSky readers shared two amazing September deep sky photographs with us: the Cygnus Loop, a nebula that stretches into Vulpecula, and Bode’s Galaxy, aka M81.
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