Tag: red supergiant star

The remains of an ancient supernova: a previously ejected gas cloud is hot and light, here in the mist SNR G11.2-0.3 at the heart of our galaxy, 16,000 light years from Earth. (NASA/Chandra X-ray Obs)

Astronomers Capture Supernova Only Hours After it Exploded

Feb 18, 2017 02:11 PM EST

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