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Medusa Nebula’s tangled filaments trace a Sun-like star’s shed atmosphere
A post says early observers mistook it for a supernova remnant, but its expansion, chemistry and lack of a central neutron star pointed elsewhere.
TLDR
A post describes a 2015 image of the Medusa Nebula taken with the European Southern Observatory’s Very Large Telescope. About 1,500 light-years away, the nebula is the expanding atmosphere shed by a Sun-like star, not a supernova remnant. The post says ultraviolet light from the exposed core makes hydrogen glow red and ionized oxygen green.
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