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Space
Space
Science
Nola Taylor Tillman

Astronomers discover giant alien planet 35 times more massive than Earth hiding in a known star system

A large planet with pink and purple horizontal stripes sits in the darkness of space.

Scientists have detected a hidden alien planet by examining the orbits of the known worlds in the star system, known as Kepler-139.

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of Earth, and it takes 355 days to orbit its star, astronomers reported in a study published May 2 in The Astrophysical Journal Letters. Despite its giant size, Kepler-139f had evaded detection.

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