A newly discovered planet has one of the shortest orbital periods ever detected by astronomers, speeding around its star once every 8.5 hours. The planet, dubbed Kepler 78b, is located approximately 700 light years away and is thought to be 40 times closer to its star than Mercury is to our sun. Because of its proximity to its star, Researchers believe the top layer of the planet is a massive molten ocean of lava that reaches temperatures of 2760°C. Kepler 78b was discovered after scientists examined more than 150,000 stars monitored by NASA's Kepler Telescope. More at Mail Online.