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 …

3 days ago · The tremendous supernova death of a massive star observed by astronomers may have heralded the birth of a binary black hole system.

Jan 7, 2026 · Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

Sep 25, 2025 · Each blast is the extremely bright, super-powerful explosion of a star. An illustration of one of the brightest and most energetic supernova explosions ever recorded.

Jan 8, 2026 · The explosion, known as Kepler’s Supernova Remnant, was a kind of exploding star that astronomers use to measure cosmic distances because it gives off a predictable brightness.

Dec 24, 2025 · When a star “goes supernova,” considerable amounts of its matter, equaling the material of several Suns, may be blasted into space with such a burst of energy as to enable the exploding …

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.

Nov 12, 2025 · About 22 million light-years away, the supernova, SN 2024ggi, exploded in the galaxy NGC 3621. Using the ESO’s Very Large Telescope, astronomers managed to capture the very early …

A supernova is the powerful explosion of a massive star at the end of its life, briefly outshining entire galaxies as it releases an immense burst of energy and light. It is the most powerful explosion known …

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 …