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 …

Nov 21, 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 …

The supernova’s progenitor was a red supergiant star, with a mass 12 to 15 times that of the Sun and a radius 500 times larger, making SN 2024ggi a classical example of a massive-star …

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.

Nov 28, 2025 · Astronomers using data from the Very Large Telescope (VLT) have revealed that the initial "breakout" phase of a supernova is elongated, not perfectly spherical.

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 …

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 …

Aug 20, 2025 · The most massive ones go out with a bang in an explosion called a supernova. Using telescopes that peer deep into space, researchers have observed many such …

3 days ago · Astronomers from Texas have witnessed the moment a star’s surface is torn apart by a supernova, becoming oblong in the process and producing more light than the entire galaxy …

Supernovas are some of the brightest events in the universe, occasionally outshining entire galaxies at their peak. Many supernovas can be seen from billions of light-years away, and …