Maciej Cegłowski

Stories

Six icy moons hide liquid oceans beneath their shells

As of September 2026: Author of 'Icy Moons Are Ocean Worlds'

Six moons in the outer solar system hide oceans of liquid water beneath frozen shells, with at least six more candidates. The evidence comes together in Maciej Cegłowski's essay 'Icy Moons Are Ocean Worlds,' which circulated on Hacker News on September 6.

Updated Sep 7

Notable Quotes

But I should stress how provisional these models are.

from Six icy moons hide liquid oceans beneath their shells · Updated Sep 7

From a habitability perspective, this is exciting, since rock/water reactions on Earth drive a lot of the chemistry necessary for life.

from Six icy moons hide liquid oceans beneath their shells · Updated Sep 7