Planet’s Year is 8.5 Hours Long
In the time it takes you to complete a single workday, or get a full night’s sleep, a small fireball of a planet 700 light-years away has already completed an entire year.
Researchers at MIT have discovered an Earth-sized exoplanet named Kepler 78b that whips around its host star in a mere 8.5 hours — one of the shortest orbital periods ever detected. The planet is extremely close to its star — its orbital radius is only about three times the radius of the star — and the scientists have estimated that its surface temperatures may be as high as 3,000 K, or more than 5,000 F. In such a scorching environment, the top layer of the planet is likely completely melted, creating a massive, roiling ocean of lava.
Read more: http://www.laboratoryequipment.com/news/2013/08/planet%E2%80%99s-year-85-hours-long