ISRO Wake up Chandrayaan-3’s Rover Pragyan on September 22nd

ISRO may put Pragyan into sleep mode

ISRO has announced plans to awaken the lunar rover Pragyan on September 22nd, after it was placed in sleep mode upon completing its lunar surface assignments. This significant development marks an important step in India’s lunar exploration journey.

ISRO Chandrayaan-3 mission

The Lunar Rover Pragyan

The lunar rover Pragyan, weighing 26 kg, is a solar-powered six-wheeled vehicle that has been stationed on the surface of the Moon as part of the Chandrayaan-3 mission. It played a crucial role in collecting essential data about lunar soil and rocks, particularly near the south pole.

Putting Pragyan to Sleep Mode

ISRO decided to deactivate certain payloads on Pragyan, including the Alpha Particle X-ray Spectrometer (APXS) and Laser-Induced Breakdown Spectroscopy (LIBS) instruments. This decision was made as the rover entered sleep mode while its battery was fully charged. The sleep mode was initiated as a strategic move during the 14-day lunar night, which ended on the Moon.

Awaiting the Next Sunrise

The rover’s battery is now oriented to harness the energy from the upcoming lunar sunrise, expected on the 22nd of September. The receiver remains active, allowing ISRO to resume communication with Pragyan.

Rover Pragyan

Importance of Pragyan’s Awakening

The reactivation of Pragyan is of paramount importance as it opens the door to a new set of assignments on the lunar surface. ISRO’s tweet highlights the anticipation of a successful awakening. However, if Pragyan fails to revive, it will remain on the lunar surface as a testament to India’s lunar exploration endeavors.


Pragyan’s mission on the Moon has yielded critical discoveries. The APXS payload confirmed the presence of essential elements such as Sulphur, Aluminium, Silicon, Calcium, and Iron on the lunar surface. Additionally, the Laser-Induced Breakdown Spectroscopy instrument detected the presence of Sulphur, contributing valuable data to our understanding of the Moon’s composition.

ISRO’s Playful Tweet

ISRO previously shared a playful tweet when the lander captured a video of Pragyan rolling on the lunar surface. They likened the rover’s movements to a child playfully frolicking in the “yards of Chandamama,” with the mother lander watching affectionately.


ISRO’s decision to awaken the Chandrayaan-3 rover Pragyan signifies another step forward in India’s lunar exploration efforts. The rover’s previous achievements, including vital data collection and confirming the presence of various elements on the Moon, demonstrate the significance of this mission. All eyes are now on September 22nd, hoping for a successful awakening and the continuation of Pragyan’s lunar journey.

Scroll to Top