Young, hot exoplanet takes title for longest year

Planet GU Psc b sits 2,000 times farther from its star than Earth sits from the sun

By Christopher Crockett, 09:36 AM May 30, 2014

Nearly 156 light-years from Earth, the planet GU Psc b likes to keep its distance — at least from its sun. The planet orbits 2,000 times farther from its cool, red star than Earth does around the sun, making it possibly the longest planetary orbit known.

One year on GU Psc b, which sits in the constellation Pisces, lasts nearly 163,000 Earth years.

Astronomers spotted the planet as a speck of infrared light following its sun across the sky, as described in the May 20 Astrophysical Journal. The ...

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