Exoplanet orbits its star every 18 hours
(PHYSorg.com Space & Earth)

In the past decade, thousands of planets have been discovered beyond our solar system. These planets have provided astronomers with the opportunity to study planetary systems that defy our preconcieved notions. This includes particularly massive gas giants that are many times the size of Jupiter (aka `super-Jupiters`). And then there are those that orbit particularly close to their suns, otherwise known as `hot Jupiters.`