Scientists believe that worlds with liquid water are the most likely places to discover extraterrestrial life. These "ocean worlds," however, may often be covered in a thick layer of ice, presenting a challenge to studying what lies beneath.
Ocean worlds may be the most likely places to discover life beyond Earth.
Scientists think that ocean worlds have ice-cold frozen exteriors, and warmer, liquid interiors.
Some astrobiologists are studying ocean worlds for evidence and signs of life.
This material is based upon work supported by NASA under cooperative agreement award number NNX16AC67A. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the view of the National Aeronautics and Space Administration (NASA).
The Science Museum of Minnesota