Earth-Size "Pi Planet" Orbits Its Star In A Speedy Quick 3.14 Days!

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MIT researchers have found an exoplanet that orbits its star in 3.14 days (Credit: NASA Ames/JPL-Caltech/T. Pyle, Christine Daniloff, MIT)

Though it has been retired since 2018, the observations made by NASA's Kepler Space Telescope during its decade-long mission continue to allow researchers to identify new worlds in our galaxy. The latest to make headlines is an Earth-sized exoplanet that rotates around its dwarf star in just 3.14 days. The similarity to the close approximation of the mathematical constant pi — the ratio between a circle's circumference and its diameter — has earned the alien world the nickname "Pi planet."

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