Why in News?

  • NASA has selected PRAXIS under the Innovative Advanced Concepts (NIAC) 2026 Phase-I funding programme.
  • The mission aims to directly sample particles from planetary ring systems, something that has never been attempted before.

ABOUT PRAXIS

  • PRAXIS stands for Planetary Rings Autonomous Exploration with In-situ Sampling.
  • It is a mission concept selected under NASA's Innovative Advanced Concepts (NIAC) 2026 Phase-I
  • The mission will consist of a bio-inspired robotic explorer driven by an Artificial Intelligence (AI)
  • It is designed to directly sample particles from planetary ring systems.

OBJECTIVES

  • Directly sample particles from planetary rings.
  • Address key scientific questions related to:
    • Formation of planetary rings.
    • Evolution of planetary rings.
    • Composition of ring particles.

KEY FEATURES

Bio-inspired AI-based Explorer
  • Uses a bio-inspired robotic explorer.
  • Operates using an Artificial Intelligence (AI)
Touch-and-Go Sampling
  • The spacecraft will graze the ring plane instead of flying through the rings to avoid collision hazards.
  • After identifying a target particle, it will perform a touch-and-go sampling operation.
  • A long deployable boom will collect samples from the particle's surface while maintaining a safe distance from moving ring particles.
Multiple Sampling Locations
  • After collecting one sample, the spacecraft will move to:
    • Another region of the rings.
    • A gap within the rings.
  • This will allow sampling from different parts of the ring system.
In-situ Analysis
  • Small onboard instruments will capture free-floating particles.
  • The AI model will help measure:
    • Particle size.
    • Porosity.
    • Composition.
PRAXIS (PLANETARY RINGS AUTONOMOUS EXPLORATION WITH IN-SITU SAMPLING) explained for UPSC

MISSION DEVELOPMENT

  • Selection under NIAC Phase-I enables the team to:
    • Conduct simulations.
    • Study the mission's system design.
  • If selected for Phase-II, the team can:
    • Develop a physical prototype.
Potential Applications
  • According to its developers, the PRAXIS sampling system can be used in future missions to study multiple ringed planets.

SIGNIFICANCE

  • It will be the first mission concept designed to directly sample particles from planetary ring systems.
  • It seeks to answer important scientific questions identified by NASA's Planetary Science Decadal Survey regarding the formation, evolution and composition of planetary rings.
  • The mission demonstrates the use of AI-driven autonomous exploration and in-situ sampling for future planetary missions.