Recent measurements from NASA’s Juno spacecraft reveal that the ice shell covering Jupiter’s moon Europa is approximately 18 miles thick in the area studied. This thickness is significantly greater than earlier estimates, which suggested a thinner ice layer. The finding raises questions about the conditions beneath the surface and the potential for life in the moon’s subsurface ocean.
Scientists have long considered Europa a prime candidate in the search for extraterrestrial life due to its subsurface ocean beneath the ice. However, the increased thickness of the ice shell could affect the exchange of materials and energy between the surface and the ocean below, influencing the moon’s habitability.
**Why this matters**
Understanding the thickness of Europa’s ice shell is crucial for assessing the moon’s potential to support life. A thicker ice layer may limit the interaction between the ocean and the surface, which could impact the availability of nutrients and energy sources needed for life. These insights will guide future missions aimed at exploring Europa’s ocean and searching for signs of life.