NASA’s SWIM robots, designed to search for life on Jupiter’s moon Europa, recently demonstrated their capabilities in tests at Caltech’s swimming pool.

These tiny, wedge-shaped robots, powered by propellers, performed various maneuvers and spelled “J-P-L.”

SWIM robots are intended to explore the subsurface ocean beneath Europa’s icy shell, searching for signs of alien life by detecting chemical and temperature signals.

The robots, currently 16.5 inches long, will eventually be reduced to about 5 inches.

Their design includes sensors for measuring environmental factors, and they will be tested in simulations replicating the conditions on Europa, Space.com has reported.

The next mission, Europa Clipper, will further explore the moon’s potential for supporting life.

Written by B.C. Begley