Gum Nebula

Gum Nebula (Gum 12) is an emission nebula that can be found in the southern constellations Vela and Puppis. It lies roughly 400 parsecs from the Earth. Hard to distinguish, it is believed to be the greatly expanded (and still expanding) remains of a supernova that took place about a million years ago. It itself contains a smaller and younger remnant, the Vela Supernova Remnant, along with the Vela Pulsar.

It is named after its discoverer, the Australian astronomer Colin Stanley Gum (1924-1960). Gum had published his findings in 1955 in a work called A study of diffuse southern H-alpha nebulae (see Gum catalog)

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