NASA is working on a new project to explore alien oceans for signs of life. The mission involves a swarm of tiny underwater robots designed to study Jupiter's moon Europa.

These futuristic robots, part of the SWIM (Sensing With Independent Micro-Swimmers) project, are small, about the size of a cellphone. They could one day dive into Europa's vast ocean, hidden beneath its thick icy crust.

The robots were recently tested in a swimming pool at Caltech. Scientists believe these robots could be key to finding out if Europa’s ocean can support life.

NASA’s Europa Clipper, set to reach Europa in 2030, will first conduct flybys of the moon. It will collect data to understand the surface and ocean better.

If successful, the SWIM project will send these tiny robots to Europa's ocean using a cryobot. The cryobot is a device that can melt through ice and deliver the robots into the water below.

This concept could revolutionize the search for life in our solar system. Scientists are excited about its potential to uncover secrets hidden beneath Europa’s icy surface.