LP 791-18 d is the third planet found in its solar system ... 791-18 d like a stress ball, causing its interior to heat up through friction. This is why Jupiter's moon Io is so volcanic: the ...

By Oliver Whang Io, the third largest of Jupiter’s moons, is caught in a pressurized, explosive dance. Orbiting near Ganymede and Europa, two of the other largest Jovian moons, and the planet ...

Io is the most volcanic body known to ... but it doesn’t hold a candle to those of the solar system’s gas giant planets. These moons are worlds unto themselves. Some, like Europa or Enceladus ...

Io orbits around Jupiter, the largest planet in our solar system, which Bolton calls ... like a hand squeezing a rubber ball, which warms up the moon. This phenomenon is called tidal flexing ...