The largest survey of exoplanets using an observatory atop Maunakea on the Big Island confirms a long-predicted relationship between planetary mass and rotation — putting a new spin on planet ...

Add Yahoo as a preferred source to see more of our stories on Google. Artist impression of the planetary system with four planets,around a small red star,called LHS1903. Caption: Astronomers have long ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how planets form. Across our galaxy, astronomers routinely observe a ...

Spin separates giant planets from 'failed stars' Clearest evidence yet that giant planets spin faster than their cosmic ...