This story was originally published by NASA and is unaltered.

(C) NASA
This story was originally published by NASA and is unaltered.
. . . . . . . . . .

Discovery Alert: An Earth-sized World and Its Ultra-cool Star [1]

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Date: 2024-05

Our galaxy is a jewel box of red stars. More than 70% of the stars in the Milky Way are M dwarfs, also known as red dwarfs. These stars are cool and dim compared with our Sun, but they often blast orbiting exoplanets with high-energy radiation, especially early in their lives. And those ‘‘lives’’ last a long time. Stars like our Sun burn for about 10 billion years before turning into hungry red giants devouring any planets too nearby. M dwarfs keep burning for 100 billion years or more, perhaps offering a foothold for life, and an even longer window for life to develop.

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[1] Url: https://science.nasa.gov/universe/exoplanets/discovery-alert-an-earth-sized-world-and-its-ultra-cool-star/

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