Remnant of the ancients
Mark Zastrow
David Cowland from Hamilton, Victoria, Australia RCW 86 lies about 8,000 light-years away in the southern constellation Circinus. Catalogued as an emission nebula, it is the result of an expanding shell of gas and dust expelled by the explosion of a massive star 185 C.E. This event was recorded by ancient Chinese astronomers as a Continue reading "Remnant of the ancients" The post Remnant of the ancients appeared first on Astronomy Magazine .