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 ...

A new study shows Saturn’s magnetic shield is uneven, pulled off-center by rapid rotation and charged particles from its icy moon Enceladus.

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

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