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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.
May 6, 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.
May 3, 2024 · Learn about supernovae, the violent explosions of massive stars that outshine their galaxies and create heavy elements. Explore the history, types, and examples of supernovae, and how they are observed and studied by astronomers.
- The Editors of Encyclopaedia Britannica
Jun 19, 2023 · A supernova is what happens when a star has reached the end of its life and explodes in a brilliant burst of light. Supernovas can briefly outshine entire galaxies and radiate more energy than...
Nov 12, 2020 · A supernova is the cataclysmic explosion of a massive star at the end of its life. Learn about the different types of supernovae, their causes, effects and examples, and how they are classified by their spectra.
Supernovae are massive cosmic explosions that produce heavy elements and enrich space. Learn about the different types of supernovae, how they occur, and what they leave behind.
Apr 14, 2023 · Supernova explosions are among the rarest and most cataclysmic events in the universe. This one begins as a bright dot just above the arc of the galaxy. Almost a year later, Earth time, the...
