Apr 30, 2014 08:28 PM EDT
Space Observers Measure the Length of Day for Exoplanet 63 Light Years from Earth
Earth spins at 1,000 miles per hour and comprises a 24-hour day. Jupiter spins at 29,000 miles per hour, the fastest in our solar system, and has only ten-hour days. Beta Pictoris b., a nearby exoplanet, spins even faster than Jupiter.