Europa and Enceladus: Ocean Worlds in the Search for Life
Why the ocean moons Europa and Enceladus matter to the search for habitable environments.
Why ocean worlds matter
Liquid water, chemistry and energy are central ingredients in habitability research. Evidence indicates that Europa and Enceladus contain oceans beneath icy surfaces.
Europa
Measurements from spacecraft support an ocean beneath Europa’s ice. NASA’s Europa Clipper mission is designed to study the moon’s habitability—not to directly confirm life.
Enceladus
Cassini observed plumes erupting from Enceladus and detected water, salts, organic compounds and other materials. These findings show interesting chemistry, not confirmed biology.
Habitability versus life
A habitable environment is one where life might be possible. It is not evidence that organisms are present.
What comes next
Future measurements will examine composition, energy sources and ocean conditions with increasing precision.
Sources and further reading
UFOUAPspace sciencealien life
Keep exploring
Read more in the ZORG-7 Learning Library, or ask the fictional alien guide a question on the homepage.