NASA / ESA’s Hubble Space Telescope captured this image of barred spiral galaxy UGC 11861 located 69 million light-years away in the constellation Cepheus with three nearby supernova explosions, as seen in the glowing blue patches surrounding its outer arms.
Of the three supernova explosions, two of them are both Type II, a kind which results from the collapse of a massive star at the end of its life. The Hubble image you see here was made from data collected to study Type II supernovae and their environments. Type II supernovae are also known as core-collapse supernovae, which essentially mark the final stage of a massive star’s life and are one of the main sources of heavy elements in the universe.
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A spiral galaxy with two broad spiral arms wrapping around a large central region, which has a glowing white bar in the very center. Thin strands of dark dust lie over much of the galaxy. The arms have small and large patches of glowing blue light, emitted by new stars,” said the ESA.
