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100 billion alien planets fill our galaxy, study suggests

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Our Milky Way galaxy is home to at least 100 billion alien planets, and possibly many more, according to a report from

According to a new study, colleagues arrived at the estimate after studying a five-planet system called Kepler-32, which is about 915 light-years from Earth.

“It’s a staggering number, if you think about it,” lead author Jonathan Swift, of Caltech in Pasadena, said in a statement. “Basically there’s one of these planets per star.”

According to the report, the five Kepler-32 worlds are similar in size to Earth and orbit quite close to their parent star, making them typical of the planets.

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