Contact: Richard Hook
Caption: 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.
Credit: ESO L. Calçada/N. Risinger (skysurvey.org)
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Related news release: Length of exoplanet day measured for first time