A supernova (pl.: supernovae) 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 …

Dec 24, 2025 · 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 …

3 days ago · Supernova formation ends a star lifecycle, dispersing heavy elements and shaping galaxies, from neutron stars to black holes across cosmic history.

2 days ago · Most distant supernova: James Webb sees a star explode at cosmic dawn JWST has revealed a stellar explosion from the universe’s childhood, and it looks astonishingly familiar. Date: …

Oct 3, 2025 · What is a supernova explained simply? Learn how stars explode, the types of supernovae, what they leave behind, and the most famous supernovae in history.

What is a supernova? Learn how massive stars explode, the types of supernovae, and the famous cosmic events captured by astronomers.

Mar 30, 2025 · 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 …

5 days ago · An international team of astronomers has achieved a first in probing the early universe, using the James Webb Space Telescope (JWST), detecting a supernova—the explosive death of a …

Sep 25, 2025 · A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes. The Crab Nebula is the leftover, or remnant, of a …

Dec 20, 2025 · An international team of astronomers has, for the first time, successfully probed the early universe. An international group of astronomers has reached a new milestone in studying the early …