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Supernova - Wikipedia Supernovae can expel several solar masses of material at speeds up to several percent of the speed of light This drives an expanding shock wave into the surrounding interstellar medium, sweeping up an expanding shell of gas and dust observed as a supernova remnant
NASA’s Webb Identifies Earliest Supernova to Date, Shows Host Galaxy NASA’s James Webb Space Telescope has observed a supernova that exploded when the universe was only 730 million years old — the earliest detection of its kind to date Webb’s crisp near-infrared images also allowed astronomers to locate the supernova’s faint host galaxy The telescope took these quick-turn observations July 1 in support of an international group of telescopes that
Supernova | Definition, Types, Facts | Britannica supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level The term supernova is derived from nova (Latin: “new”), the name for another type of exploding star
Webb identifies earliest supernova to date, shows host galaxy The NASA ESA CSA James Webb Space Telescope has confirmed the source of a super-bright flash of light known as a gamma-ray burst, generated by an exploding massive star when the Universe was only 730 million years old For the first time for such a remote event, the telescope provided a detection of the supernova’s host galaxy Webb’s quick-turnaround observations verified data taken by
What is a Supernova? Exploring the Explosive Death of Stars and Its . . . A supernova is not just a star’s death—it is a dramatic event that reshapes the cosmos These cosmic explosions are responsible for creating the elements that make up the Earth and life itself, and they play a critical role in the evolution of galaxies and stars
Supernovas Remnants - Harvard–Smithsonian Center for Astrophysics Supernovas are some of the brightest events in the universe, occasionally outshining entire galaxies at their peak Many supernovas can be seen from billions of light-years away, and nearby supernovas in past centuries have been visible during the daytime
Supernova - Definition Detailed Explanation - Astronomical Phenomena . . . A supernova is a powerful and catastrophic event that occurs when a star explodes, releasing an immense amount of energy into space This explosion can briefly outshine an entire galaxy and is one of the most energetic events in the universe