Watch a real supernova blast evolve over 25 years in new telescope video

Astronomers have turned a famous star explosion into a 25‑year time‑lapse, using a NASA telescope to watch the superheated gas race through space and slam into its surroundings. The new study using the Chandra X-ray Observatory tracks how different parts of the shockwave slow down in different directions, turning this 400‑year‑old relic into a laboratory for how supernovas work.The stakes go beyond a striking movie, which you can watch further down in this story.&nbs