Nov 30, 2018

In a galaxy far away, an old star exploded and became a supernova

Posted by in category: cosmology

About 170 million years later, the light emanating from the explosion was received by an arsenal of high-powered telescopes here at Earth. While the telescopes observed, a few of those stars ended their long lives in dramatic explosions. See what we learned:…cfHXkJ10lQ

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