The Indian Space Research Organisation (ISRO) has successfully carried out the undocking of two satellites under
the Space Docking Experiment (SpaDeX) mission. This achievement marks a significant milestone in India’s advancements in space technology.
About the SpaDeX Mission:
The SpaDeX mission is a cost-effective technology
demonstrator designed to showcase in-space docking
capabilities using two small spacecraft launched via the Polar
Satellite Launch Vehicle (PSLV).
Primary Objective:
The mission aims to develop and validate technologies
necessary for rendezvous, docking, and undocking of two
small spacecraft—SDX01 (Chaser) and SDX02 (Target)—in a
low-Earth circular orbit.
Secondary Objectives:
- Demonstration of power transfer between docked spacecraft, crucial for future in-space robotics applications.
- Composite spacecraft control for improved space maneuverability. Post-undocking payload operations to assess mission sustainability.
- The SpaDeX mission consists of two small spacecraft (each weighing approximately 220 kg) launched aboard the PSLV-C60.
Recent Developments:
- The SPADEX satellites were successfully docked recently.
- On March 13, 2025, ISRO successfully undocked the satellites in its first attempt.
- The undocking occurred in a 460 km circular orbit with a 45-degree inclination.
- The satellites are now independently orbiting, and their health status is reported as normal.
- With this accomplishment, ISRO has demonstrated all key technologies required for rendezvous, docking, and
undocking in a circular orbit.
Significance:
- India has become the fourth nation globally, after the USA, Russia, and China, to achieve this technological
feat. - The SpaDeX mission serves as a crucial step toward India’s future space exploration goals, including:
- Sample return missions to bring lunar rocks and soil to Earth.
- Development of the Bharatiya Antariksha Station, India’s proposed independent space station.
- Landing an astronaut on the Moon as part of India’s long-term human spaceflight goals.
About ISRO:
Established in 1969, the Indian Space Research Organisation (ISRO) is India’s premier space agency,
responsible for planning and executing the country’s space missions.
- ISRO is renowned for its cost-effective and efficient missions, gaining global recognition for its achievements.
- The organization functions under the Department of Space, which directly reports to the Prime Minister of
India. - ISRO operates through various specialized centers across the country, each contributing to different aspects of
India’s space program. - This milestone reinforces India’s position as a major player in space technology and exploration, paving the
way for future advancements in space docking, satellite servicing, and interplanetary missions.