The Moons of Jupiter and Saturn Could Have Earth-Like Tidal Waves

byJon Christian
1. 2. 19

New finding bolsters the case for alien life.

Shell Game

New calculations suggest that Jupiter’s moon Europa and Saturn’s moon Enceladus could have active tidal waves, much like those here on Earth, under their thick icy shells — and that could be increase the potential of finding extraterrestrial life on either moon.

“I can imagine organisms anchored to the sea floor or the ice benefiting from these waves,” NASA Jet Propulsion Laboratory researcher Steven Vance told New Scientist of the new findings. “If these standing waves do occur, maybe these spots where they focus are also focal points for life.”

New Wave

The new research in the journal Icarus comes out of the Royal Netherlands Institute for Sea Research, where scientists calculated how the enormous gravitational pull from Jupiterand Saturn— the most massive planets in the solar system — would affect the liquid water under the icy shells of Europa and Enceladus, two of the planets’ moons.

Scientists have long been interested in the dark oceans of these moons as a potential home for life beyond Earth, so the promise of tidal waves under their ice is an exciting finding — it could give a way, Vance told New Scientist, for nutrients and energy to flow between the moons’ cores and shells.


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