Saturn’s Rings Are Like a Seismometer Revealing the Planet’s Core

Saturn’s icy rings are not just aesthetically wonderful wonders. One of them also records beautiful planetary music. Hidden under a blanket of mostly hydrogen gas, the interior of the planet is shaking. This causes shifts in the local gravitational field that attracts particles in Saturn’s wide C ring and makes them dance. These distinctive jumps […]

Inside Mars, NASA’s InSight Mission Maps Surprises to the Core

The fate of almost everything on the earth’s surface is determined by the engines of hell in the deep. The situation is no different on Mars. Now, thanks to a daring robot parked on the Martian surface by NASA in November 2018, scientists have a map of our neighboring world’s geological cliffs, the first ever […]