India's third lunar mission, Chandrayaan-3 created history in itself along with multiple milestones in space exploration across the globe.

In another unique experiment by the Indian Space Research Organization (ISRO),  The Propulsion Module (PM) of Chandrayaan-3 has been moved from an orbit around the Moon to an orbit around Earth, ISRO has said.

"Ch-3's Propulsion Module (PM) takes a successful detour! In another unique experiment, the PM is brought from Lunar orbit to Earth’s orbit. An orbit-raising maneuver and a Trans-Earth injection maneuver placed PM in an Earth-bound orbit," tweeted ISRO in X.

https://x.com/isro/status/1731872488639152591?s=20 ;

For the Propulsion Module, the main objective was to ferry the lander module from the Geostationary Transfer Orbit (GTO) to the final lunar polar circular orbit and separate the lander, it said.

After the separation, the Spectro-polarimetry of HAbitable Planet Earth (SHAPE) payload in the PM was also operated, the space agency said.

The initial plan was to operate this payload for about three months during the mission life of the PM. The precise orbit injection by LVM3 and optimal earth or lunar burn manoeuvres resulted in the availability of over 100 kg of fuel in the PM after over one month of operations in the lunar orbit, it added.

ISRO said that it was decided to use the available fuel in the PM to derive additional information for future lunar missions and demonstrate the mission operation strategies for a sample return mission.

To continue the SHAPE payload for earth observation, it was decided to re-orbit the PM to a suitable earth orbit. This mission plan was worked out considering collision avoidance such as preventing the PM from crashing onto the Moon's surface or entering into the Earth's Geosynchronous Equatorial Orbit (GEO) belt at 36,000 km and orbits below that, the statement said.

The primary objective of the Chandrayaan-3 mission was to demonstrate a soft landing near the lunar south polar region and perform experiments using the instruments on the 'Vikram' lander and the 'Pragyan' rover.

The spacecraft was launched on July 14, 2023, on board the LVM3-M4 vehicle from the Satish Dhawan Space Centre (SDSC-SHAR).

On August 23, the Vikram Lander made its historic touchdown.