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supernovas

  • plural
    of supernova.
    supernova
    noun
    the explosion of a star, possibly caused by gravitational collapse, during which the star's luminosity increases by as much as 20 magnitudes and most of the star's mass is blown away at very high velocity, sometimes leaving behind an extremely dense core.

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"Our prediction is that we'll see a lot more galactic cosmic radiation... which is from supernovas and is everywhere," versus radiation coming from the Sun, he said.

From Barron's ● Apr. 10, 2026

Studies of very bright exploding stars called supernovas showed that rather than slowing down, distant galaxies were actually accelerating away from each other.

From BBC ● Dec. 27, 2025

It's also possible that they aren't conventional supernovas at all, instead triggered by a star's merger with a black hole.

From Science Daily ● Nov. 15, 2023

Ever since, neutrinos have been detected in the Sun, during supernovas and even in interactions between cosmic rays and the upper atmosphere.

From Salon ● Aug. 31, 2023

But unlike Hubble’s dim Cepheids, supernovas are visible halfway across the universe.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife