A composite X-ray image of supernova remnant RCW 86, created from data by the XMM-Newton and Chandra telescopes. The image shows the expanding shell of material in blue, green, and red hues representing different X-ray energies. This remnant is believed to be the debris from a supernova observed by Chinese astronomers in 185 AD, making it potentially the earliest recorded supernova. The image showcases the vast scale and beauty of cosmic events, located approximately 8,200 light-years away in our Milky Way galaxy.
Astronomy Picture from 28/09/2006
RCW 86: Historical Supernova Remnant
Source: https://apod.nasa.gov/apod/ap060928.html
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