WEBVTT FILE 1 00:00:00.000 --> 00:00:02.002 [music] 2 00:00:02.002 --> 00:00:08.308 Over 11 million years ago, a star exploded in the M82 galaxy. 3 00:00:08.308 --> 00:00:14.548 2.5 years of Hubble observations led to this movie of a supernova explosion rippling through space. 4 00:00:14.548 --> 00:00:23.924 [music] 5 00:00:23.924 --> 00:00:30.797 Light from the explosion reflected off nearby dust, creating this “light echo” effect. 6 00:00:30.797 --> 00:00:33.033 [music] 7 00:00:33.033 --> 00:00:41.041 This type of supernova occurs when material from a companion star falls onto a white dwarf star. 8 00:00:41.041 --> 00:00:49.583 With enough pressure, the white dwarf explodes. 9 00:00:49.583 --> 00:00:56.857 Hubble’s observations are the most detailed images yet of this type of supernova. 10 00:00:56.857 --> 00:00:00.000 www.nasa.gov/hubble @NASA Hubble