An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a sun-like star, including an ultra-short period planet with one of the highest densities ...

For decades, the solar system set the template: small rocky planets close to the star, gas giants farther out, beyond a boundary called the snow line where icy grains help cores grow fast enough to ...

A surprising reversal in molten iron flow beneath the Pacific is giving scientists a sharper view of how Earth’s magnetic ...

A doughnut-shaped region thousands of kilometers beneath our feet within Earth's liquid core has been discovered, providing new clues about the dynamics of our planet's magnetic field. A ...