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A supernova (pl.: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion.
Oct 11, 2024 · Learn about the causes, types, brightness, and effects of supernovas, the biggest explosions in the universe. Find out how NASA scientists use telescopes to study these spectacular events and what they reveal about the origin of elements and the expansion of space.
Jun 19, 2023 · Type I supernova: A star accumulates matter from a nearby neighbor until a runaway nuclear reaction ignites. Type II supernova: A star runs out of nuclear fuel and collapses under its own gravity.
Sep 20, 2024 · supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level.
Supernovae add enriching elements to space clouds of dust and gas, further interstellar diversity, and produce a shock wave that compresses clouds of gas to aid new star formation. But only a ...
Learn about the types, causes, and effects of supernovas, the brightest events in the universe. Explore how astronomers study supernovas and their remnants using various tools and methods.
Jun 10, 2024 · The age of each supernova can be determined from its redshift (designated by ‘z’). The light of the most distant supernova, at a redshift of 3.8, originated when the universe was only 1.7 billion years old. A redshift of 2.845 corresponds to a time 2.3 billion years after the big bang.
