Thursday, May 1, 2014

Beta Pictoris B

This artist’s view shows the planet orbiting the young star Beta Pictoris. This exoplanet is the first to have its rotation rate measured. Its eight-hour day corresponds to an equatorial rotation speed of 100,000 kilometers/hour — much faster than any planet in the Solar System.

Illustration credit: ESO L. Calçada/N. Risinger (

Note: For more information, see Length of Exoplanet Day Measured for First Time.

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