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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. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely ...
Apr 22, 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.
Apr 18, 2024 · Learn about supernovae, the violent explosions of massive stars that outshine their galaxies and create heavy elements. Find out the historical and recent examples, types, and causes of supernovae.
- The Editors of Encyclopaedia Britannica
Jun 19, 2023 · A supernova is the explosion of a massive star. There are many different types of supernovae, but they can be broadly separated into two main types: thermonuclear runaway or core-collapse. This ...
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.
Mar 14, 2023 · Webb's infrared instruments reveal the details of a Wolf-Rayet star, a luminous and massive star that is casting off its outer layers before going supernova. The star is 15,000 light-years away in the constellation Sagitta and is a rare and important source of cosmic dust for astronomers.
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