The surface of Europa is made up of ice about 15 to 25 kilometers thick. Below this ice lies an ocean that may be as deep as 100 kilometers. This ocean may cover the entire…
Europa’s Ocean May Lack Energy to Support Life, Scientists Find
Europa, one of Jupiter’s many moons, has captured scientists’ attention. It is covered in thick ice and hides a deep ocean underneath. This ocean is thought to be salty and vast, making Europa a top spot for space exploration. Many wonder if this ocean could support life.
Here is what we know about Europa’s ice and ocean.
The Ice Shell and Hidden Ocean
The surface of Europa is made up of ice about 15 to 25 kilometers thick. Below this ice lies an ocean that may be as deep as 100 kilometers. This ocean may cover the entire moon beneath the ice layer. Scientists believe it holds more water than all of Earth’s oceans combined. This makes Europa unlike most other moons around Jupiter.
Europa’s Rocky Core and Its Past Heat
A rocky core that is comparable to the core of the Earth can be found beneath the ocean. On the other hand, the core of it is far cooler than it was billions of years ago because it lost heat. It is possible that Europa’s interior heat is presently very low or even nonexistent, in contrast to Earth, where life is sustained by volcanoes and shifting tectonic plates.
A new study questions life on Europa.
Study Leaders and Methods Used
A team led by Associate Professor Paul Byrne from Washington University studied Europa’s geology closely. The results were published recently in Nature Communications. They analyzed the size of Europa, its rock makeup, and how Jupiter’s gravity affects it. The team also included experts like Professors Philip Skemer and Jeffrey Catalano.
Lack of Geologic Activity on the Seafloor
There are few indications that Europa has active geology beneath its surface, according to the study. It would appear that there are neither tectonic movements nor hydrothermal vents on the seafloor at the present time. These are the sources of energy that are necessary for living forms that are located close to deep-sea vents. It is possible that the seafloor would be very silent or perhaps lifeless at this point if it were not for these vents or volcanic activity beneath the ice.
Why Tidal Forces Matter—And Why They Are Weak on Europa
The Role of Jupiter’s Gravity in Heating Moons
Jupiter exerts a powerful gravitational force on its moons, which results in the formation of tides within the moons, which in turn generate heat through a process known as tidal heating. Because of the irregularity of its orbit, Io, for instance, experiences powerful volcanic eruptions that are brought on by the powerful tidal pressures exerted by Jupiter.
Europa’s Stable Orbit Limits Heat Production
Europa, on the other hand, has a stable orbit that involves a greater distance from Jupiter than Io does. If we compare this to the highly active surface volcanoes of Io, we can see that this has a substantial impact on tidal heating today. In light of this, it is highly unlikely that tidal heating may be responsible for driving underwater volcanism or geological activity at deep depths, despite the fact that it can keep some of its water fluid rather than frozen solid.
The Impact On The Search For Life—What Does It Mean?
This research suggests there may not be enough energy to support modern life forms where the seafloor meets the ocean on Europa now.
The energy just doesn’t seem enough, Byrne says about potential ecosystems near hydrothermal vents like those seen on Earth.
This does not fully close doors to possible life in other parts or times—scientists remain eager for future missions that can provide new data.
The Future Excitement: NASA’s Upcoming Mission to Explore More
NASA plans to launch the Europa Clipper spacecraft in 2031. This mission will fly closely past Europa many times to take high-resolution images and measure properties like ice thickness more accurately than before.
Scientists hope this mission will offer detailed insight into both surface features and clues about what happens under the ice shell, bringing us closer to understanding if any form of life could exist there or ever existed in the past.
Additionally, to stay updated with the latest developments in STEM research, visit ENTECH Online. Basically, this is our digital magazine for science, technology, engineering, and mathematics. Further, at ENTECH Online, you’ll find a wealth of information.
Reference
- Byrne, P. K., Dawson, H. G., Klimczak, C., Regensburger, P. V., Crane, K. T., Catalano, J. G., Elder, C. M., Foley, B. J., German, C. R., Green, A. P., Hemingway, D. J., Melwani Daswani, M., Panning, M. P., Randolph-Flagg, N., Sherwood Lollar, B., Skemer, P., Vance, S. D., & Wiens, D. A. (2026). Little to no active faulting likely at Europa’s seafloor today. Nature Communications, 17(1). https://doi.org/10.1038/s41467-025-67151-3
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