Post #4799

NASA Finds Hidden Heat on Saturn’s Icy Moon Enceladus, Hinting at [conditions for] Life This balanced heat flow suggests its underground ocean could stay liquid for geological ages, supporting conditions for life. Scientists even used temperature data to estimate ice thickness, preparing the way for future missions to probe its mysterious depths. Heat From Both Poles – A Game Changer A study released today (November 7) in Science Advances, led by scientists from Oxford University, the Southwest Research Institute, and the Planetary Science Institute in Tucson, Arizona, has revealed the first clear evidence of strong heat flow at Enceladus’ north pole. This discovery overturns earlier beliefs that heat loss occurred only in the moon’s active south pole. The results show that Enceladus gives off far more heat than expected from a frozen, inactive world, reinforcing the idea that it has the energy needed to sustain life. Enceladus is an exceptionally dynamic moon with a global, salty ocean beneath its icy surface. Scientists believe this subsurface ocean is the source of the moon’s heat. Because it contains liquid water, warmth, and essential chemicals (such as phosphorus and complex hydrocarbons), this hidden sea is considered one of the most promising environments in our solar system for life beyond Earth. However, for life to persist, Enceladus’ ocean must stay stable, maintaining a balance between heat gained and heat lost. This equilibrium depends on tidal heating: Saturn’s immense gravity flexes the moon during each orbit, producing internal friction and heat. If the tidal energy weakens, the ocean could gradually freeze. If it becomes too strong, increased activity might disrupt the delicate conditions that allow the ocean to exist. Source:SciTechDaily @EverythingScience