What Is Supernova: 10 Fascinating Facts
Image: NASA
11 May 2025
A supernova is the most powerful explosion ever witnessed by humans. NASA calls it an extremely bright, super-powerful blast of a star.
Image: NASA
Ever wondered what triggers it? One kind of supernova marks the final farewell of a massive star reaching the end of its life.
Image: NASA
When a star over 10 times the size of our Sun explodes, it may leave behind the universe's densest objects, black holes.
Image: NASA
Another type of supernova occurs in a binary star system where at least one star is a tiny, Earth-sized white dwarf.
Image: NASA
These cosmic events are so bright they can outshine an entire galaxy for days or even months!
Image: NASA
In galaxies like our Milky Way, astronomers estimate that 2-3 supernovas explode every century.
Image: NASA
Thanks to powerful telescopes, experts observe hundreds of supernovas every year — but mostly outside our own galaxy.
Image: NASA
Why not within the Milky Way? That's because space dust blocks our view of most explosions happening closer to home.
Image: NASA
Supernovas are not just dramatic—they help spread elements like oxygen, iron, and carbon, which are crucial for life.
Image: NASA
Fun fact: Without past supernovas, Earth, and even human bodies, wouldn't have many of the elements we rely on today!
Image: NASA
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