https://scitechdaily.com/setting-the-clock-on-a-supernova-stellar-explosion-just-hundreds-of-years-ago-in-earths-timeframe/
A new image of SNR 0519-69.0 shows the debris of a star that exploded several hundred years ago in Earth’s timeframe. The explosion of a white dwarf star, after reaching a critical mass, created SNR 0519-69.0. This new image contains X-ray data (green, blue, …
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