supernovas
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pluralof supernova.plural
The grammatical form denoting more than one person, place, thing, or idea.
supernovanounthe 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.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The brand-new Vera C. Rubin Observatory is supposed to complete a groundbreaking “survey” of the universe, the most comprehensive catalog of its galaxies, asteroids, supernovas and black holes ever completed.
From The Wall Street Journal ● Nov. 2, 2026
"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
So, is the theory wrong and heavy elements are produced some other way, or are they only produced in supernovas under certain conditions?
From BBC ● Apr. 12, 2024
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
The la supernovas explode in roughly the same way and with the same brightness.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
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