NASA Plans AI-Powered Mission To Collect Saturn Ring Particles Directly

Scientists are working on a new mission concept that could help answer long-standing questions about Saturn's rings. The proposed system, called PRAXIS, is designed to collect and study ring particles directly, something that has never been done before, reported NASA.

Although NASA's Cassini mission made major discoveries about Saturn, researchers say important questions about the formation, movement, and evolution of planetary rings remain unanswered. Scientists believe that directly sampling ring particles could greatly improve understanding of Saturn's dense rings, the thinner rings of Uranus and Neptune, and even the early disks that formed planets and stars.

Saturn's rings are made up mostly of water ice and contain particles ranging from tiny grains to house-sized boulders. These particles are constantly moving, coming together, and breaking apart.

PRAXIS is designed to provide the first direct observations of millimetre- to centimetre-sized ring particles, a capability that Cassini did not have. 

The mission would use an AI-powered, bio-inspired robotic explorer to collect particles and study their size, porosity, and composition.

The system combines robotic autonomy for collision avoidance, precision sampling, and on-site analysis. It also uses technology inspired by sport casting to capture free-floating particles and miniaturised instruments for real-time scientific analysis.

The mission concept is based on elements of the Saturn Ring Observer Mission Study. After identifying a suitable ring particle through imaging, the spacecraft would carry out a touch-and-go sampling operation using a long, soft, deployable boom.

Because the ring particles are constantly moving, the spacecraft would remain at a safe distance to reduce the risk of collision while using the boom to collect samples. 

After retrieving a sample, the system would move to another section or gap in the rings to study particles from different regions.

The project plans to demonstrate the feasibility of PRAXIS during Phase I through simulations and system design. This work is expected to support the development of a physical prototype in Phase II.

Scientists say the technology could also be used in future planetary exploration missions, including the upcoming Uranus Probe mission, while providing new insights into the origins and evolution of planetary ring systems.