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India Achieves Second Satellite Docking in SpaDEX Mission

  • 21 Apr 2025

On 21st April 2025, Union Minister Dr. Jitendra Singh announced that ISRO's SpaDEX mission successfully completed its second satellite docking, marking a critical milestone in India's space docking capabilities.

Key Points

  • Second Docking Confirmed: The two satellites docked successfully following their earlier undocking on 13th March, 2025.
  • Global Milestone: India became the fourth country after the US, Russia, and China to demonstrate in-orbit satellite docking.
  • Mission Overview: SpaDEX launched on 30th December, 2024, aboard PSLV-C60 and involves two 220-kg spacecraft — SDX01 (Chaser) and SDX02 (Target).
  • First Docking Timeline: The initial docking occurred on 16th January, 2025, followed by a successful undocking in March.
  • Indigenous Tech: ISRO developed the Bharatiya Docking System, featuring an autonomous strategy, ISL, rendezvous sensors, and power-sharing capabilities.
  • Strategic Significance: The mission paves the way for future human spaceflight, satellite servicing, space station plans, and lunar missions like Chandrayaan-4.
  • Next Steps: Additional experiments are scheduled over the next two weeks to further test and refine the technology.