Two ISRO satellites dock successfully for the second time, Pg12

– ISRO successfully executed the second satellite docking under the SpaDEx mission. – Satellites SDX01 (Chaser) and SDX02 (Target) were docked for the second time. – India became the fourth country after the U.S., Russia, and China to achieve satellite docking. – The mission aims to develop and demonstrate docking, undocking, and power transfer technologies. – It enables future missions involving astronaut rendezvous, space station assembly, and robotic operations.

Background/Context

• The Space Docking Experiment (SpaDEx) is an indigenous ISRO project to validate technologies needed for future manned missions and space infrastructure. – The first docking of PSLV-C60/SpaDEx satellites occurred on 16 January 2025, with undocking on 13 March 2025. – The mission was launched on 30 December 2024, marking a key milestone in India’s space technology development.

Key Developments

• Second successful docking confirmed by the Union Minister of Science and Technology. – Future experiments planned in the next two weeks to further test docking reliability and onboard systems. – SpaDEx demonstrates spacecraft rendezvous, docking, undocking, and power transfer between satellites.

Strategic/Policy/Technological Implications

• Technology demonstrated under SpaDEx is critical for: - Gaganyaan (human spaceflight program) - Lunar and interplanetary missions - Future Indian space station projects - Ability to dock and undock satellites allows modular spacecraft development, sample return missions, and orbital repairs. – Power transfer technology between docked satellites has implications for in-space robotics, command control, and payload support.

India's Stand or Way Forward

• With this achievement, India joins the elite club of spacefaring nations capable of autonomous docking. – Strengthens India’s case for future international space collaborations and enhances national space security. – Continued progress on such technologies will enhance India’s global leadership in affordable, indigenous space missions.

Challenges Ahead

• Ensuring reliability, safety, and precision in future human-rated missions. – Scaling up from two small satellites to larger docking platforms. – Building sustainable infrastructure for long-term orbital missions and space stations.

Mains Mock Question:

Discuss the significance of ISRO’s Space Docking Experiment (SpaDEx) in the context of India’s future space ambitions. How does this achievement position India globally in the field of space technology?