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ISRO Completes Second Docking in SpaDeX Mission, Advancing Space Technology

India's SpaDeX mission achieves another milestone, showcasing indigenous orbital docking capabilities critical for future lunar and crewed missions.

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The ISRO SpaDex mission had successfully achieved the undocking of two of its satellites on March 13.
ISRO successfully completes SpaDeX docking mission, paving way for Chandrayaan-4, Gaganyaan

Overview

  • The Indian Space Research Organisation (ISRO) successfully completed the second satellite docking of its SpaDeX mission on April 21, 2025.
  • SpaDeX, launched on December 30, 2024, demonstrated autonomous docking, undocking, and rendezvous using two small satellites in a 460-km orbit.
  • India is now the fourth nation, after the US, Russia, and China, to achieve in-space docking, a key capability for advanced space missions.
  • The mission validated the Bharatiya Docking System, an indigenous technology featuring sensors, inter-satellite communication, and autonomous power transfer.
  • This achievement supports India's future space ambitions, including the Chandrayaan-4 lunar mission, Gaganyaan human spaceflight, and a proposed space station.