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 ...

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Scientists have detected mysterious waves deep inside the Sun, uncovering hidden magnetic forces that drive solar activity.