Chandrayaan 3 Update; Vikram Lander Pragyan Rover Wake Up Details | ISRO Moon Mission Sunlight started reaching South Pole, ISRO will try to establish contact tomorrow

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Video of the rotation of rover Pragyan on the lunar surface has been made with the camera of lander Vikram.  ISRO shared it on August 31.  - Dainik Bhaskar

Video of the rotation of rover Pragyan on the lunar surface has been made with the camera of lander Vikram. ISRO shared it on August 31.

The lander and rover of Chandrayaan-3 are expected to wake up once again. After 14 days of night, sunlight has once again started reaching the southern polar part of the Moon. ISRO will try to contact Vikram lander and Pragyan rover, which have been put on sleep mode here, on September 22.

According to Indian Aerospace Defense News, the solar panels of the lander and rover can start working as soon as sunlight falls on them. ISRO had put Vikram Lander in sleep mode on September 4. Earlier on September 2, Pragyan Rover was put into sleep mode.

The lander had investigated new places on the moon with payloads before going into sleep mode. Only after that Vikram Lander was given the command to sleep. Currently all payloads are closed. Only the receiver is on, so that it can work again after taking commands from Bengaluru.

ISRO shared this video on August 25.  In this, Pragyan Rover is seen coming out of the ramp of the lander.

ISRO shared this video on August 25. In this, Pragyan Rover is seen coming out of the ramp of the lander.

Chandrayaan-3 mission is only for 14 days
Chandrayaan-3 mission is only for 14 days. This is because one day on the Moon is equal to 14 days on Earth. It is such a big night. That means there is night for 14 days and light for 14 days on the Moon.

During the night the temperature at the Moon’s South Pole drops to minus 238 degrees Celsius. Rover-lander can generate power in sunlight, but at nightfall the power generation process will stop. If there is no power generation, the electronics will not be able to withstand the severe cold and will get damaged.

On July 14, 2023, Chandrayaan-3 was sent into space using an LVM3-M4 rocket from Sriharikota in Andhra Pradesh.

On July 14, 2023, Chandrayaan-3 was sent into space using an LVM3-M4 rocket from Sriharikota in Andhra Pradesh.

Updates from Chandrayaan-3 till now

  • ILSA payload records earthquake on lunar surface: On August 31, ISRO said that the Instrument of Lunar Seismic Activity (ILSA) payload mounted on Chandrayaan-3’s Vikram lander has recorded the natural phenomenon of earthquake on the lunar surface. This earthquake occurred on 26 August. ISRO said that investigation into the source of the earthquake is ongoing. Read the full news…
  • LIBS payload confirms sulfur on the Moon: In the second observation sent on August 28, the presence of sulphur, aluminium, calcium, iron, chromium and titanium has also been detected at the South Pole of the Moon. There are also manganese, silicon and oxygen on the surface, the search for hydrogen is ongoing. Read the full news…
  • Pragyan Rover changed its route after seeing a 4 meter crater: On August 27, a 4 meter diameter crater appeared in front of Rover Pragyan. This crater was 3 meters ahead of the rover’s location. In such a situation, the rover was given the command to change the path. Even before this, Pragyan had passed through a small crater about 100 mm deep. Read the full news…
  • Plasma found on surface, but less dense: The Radio Anatomy of Moon bound Hypersensitive Ionosphere and Atmosphere-Langmuir Probe (RAMBHA-LP) aboard the lander Vikram has discovered plasma at the Moon’s south pole, although it is less dense (sparse). Read the full news…
  • Vikram Lander’s first observation – temperature around 50 degrees on the surface: ChaSTE payload mounted in Vikram lander of Chandrayaan-3 has sent the first observation related to the temperature of the Moon. According to ChaSTE i.e. Lunar Surface Thermophysical Experiment, there is a lot of difference in the temperature on the surface of the Moon and at different depths. Read the full news…
This picture of Vikram Lander has been taken with the help of two navigation cameras installed on Pragyan Rover.  ISRO said- This is a 3-channel picture.

This picture of Vikram Lander has been taken with the help of two navigation cameras installed on Pragyan Rover. ISRO said- This is a 3-channel picture.

Soft landing of Chandrayaan-3 lander took place in 4 phases.
ISRO started the automatic landing process on August 23 at 5.44 pm from an altitude of 30 km and completed the journey in the next 20 minutes.

Chandrayaan-3 orbited the Earth 21 times and the Moon 120 times in 40 days. Chandrayaan traveled 55 lakh km to cover 3.84 lakh km distance to the moon.

1. Rough Breaking Phase:

  • The lander was 750 Km away from the landing site. Altitude 30 Km and speed 6,000 Km/hr.
  • This phase lasted for 11 and a half minutes. During this time the sensors of Vikram Lander were calibrated.
  • The lander was brought to a distance of 7.4 Km from a height of 30 Km in horizontal position.

2. Attitude Holding Phase:

  • Vikram took a photo of the moon’s surface and compared it with the already existing photos.
  • During the time of Chandrayaan-2, this phase was of 38 seconds, this time it was reduced to 10 seconds.
  • In 10 seconds, the height of Vikram Lander from the Moon decreased from 7.4 Km to 6.8 Km.

3. Fine Breaking Phase:

  • This phase lasted for 175 seconds in which the speed of the lander became 0.
  • The position of Vikram Lander was made completely vertical.
  • The height of Vikram Lander from the surface remained about 1 kilometer.

4. Terminal Descent:

  • In this phase the lander was brought to a height of about 150 meters.
  • When everything went well, a soft landing was made on the surface of the moon.

Understand from this graphics, at what speed the lander reached the moon…

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This was India’s third mission to the moon, water was discovered in the first mission.
Chandrayaan-1 was launched in 2008. In this, a crash landing of a probe was done in which water was found on the moon. Then in 2019, Chandrayaan-2 reached close to the moon, but could not land. Chandrayaan-3 landed on the moon on 23 August 2023. Chandrayaan-3 also sent the message of reaching the moon safely. Said- ‘I have reached my destination.’

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What will India gain from this mission
ISRO’s ex-scientist Manish Purohit says that through this mission, India wants to tell the world that it has the capability to make a soft landing on the moon and operate the rover there. This will increase the world’s trust in India which will help in increasing commercial business. India has launched Chandrayaan from its heavy lift launch vehicle LVM3-M4. India has already shown the capability of this vehicle to the world.

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Read this news also…

Whether humans can settle on the Moon or not: Will a way be found to find a planet like Earth; What will Chandrayaan-3 do in 14 days?

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With the soft landing on the South Pole of the Moon, India has become the first country in the world to do so. The biggest objective of Chandrayaan 3 mission was to test and demonstrate the technology of soft landing on the Moon. India has succeeded in this objective. Read the full news…

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