https://scitechdaily.com/supernova-bubble-captured-in-hubble-time-lapse-movie-20000-year-old-explosion-still-expanding-at-500000-mph/
20,000-Year-Old Explosion Continues Expanding Into Space The abrupt, explosive death of a massive star, called a supernova, is one of the biggest blasts in the universe since the Big Bang. What's left behind are shredded stellar remnants resembling a fluffy c…
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