Red dwarfs, meanwhile, burn for hundreds of billions of years.

而红矮星，可以燃烧成百上千亿年。

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Red dwarfs are stars that are only 10-20 percent as massive as our sun.

红矮星是一种重量只有我们太阳10-20%的恒星。

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Looking for planets orbiting red dwarfs is easier because the stars are less massive.

寻找围绕红矮星运转的行星则相对容易，因为恒星的体积较小。

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Looking for planets orbiting red dwarfs is easier because the stars are less massive.

ECONOMIST: Is there anybody out there?

For planets around other types of stars, such as red dwarfs, observation might take hundreds of hours.

FORBES: White Dwarfs May Hold The Key To Finding Alien Life

This would require a pair of red dwarfs to encounter the solar system and perform an elaborate gravitational dance with it for a few thousand years.

ECONOMIST: To the ends of the earth