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How is Chandrayaan-2 different from Chandrayaan-1

File photo. Photograph:( ANI )

Agencies New Delhi Sep 06, 2019, 03.14 PM (IST)

India and the world await Chandrayaan-2's soft-landing on the moon which is scheduled for Saturday between 1:30 am to 2:30 am, followed by the Rover (Pragyan) roll out between 5:30 am to 6:30 am.

Comparing Chandrayaan-2 with Chandrayaan-1, former ISRO scientist Nambi Narayanan said, "The basic difference between the two is that in Chandrayaan-2 we are doing soft landing." 

He further added that the former was done by PSLV while in Chandrayaan-1 the scientists were using GSLV Mk III, meaning the current had more payload capability.

A total number of 38 soft landing attempts on the moon have been made by the space agencies so far with a success rate of 52 per cent. 

Chandrayaan-2 is India's first attempt at soft-landing on the surface of the moon. This mission will make India the fourth country after the US, Russia, and China to conduct a soft landing on the moon.

Here is how Chandrayaan-2 is different from Chandrayaan-1.

Earlier, India had conducted a moon mission in 2008 with Chandrayaan-1. According to ISRO website, Chandrayaan-1 was launched by India's Polar Satellite Launch Vehicle, PSLV-C11 on October 22, 2008, from Satish Dhawan Space Centre in Andhra Pradesh`s Sriharikota. 

The spacecraft made more than 3400 orbits around the moon. Chandrayaan-1 was operational for 312 days till August 29, 2009. The lift-off mass of Chandrayaan-1 was 1380 kg while Chandrayaan-2 weighs 3850 kg.

Chandrayaan-1 conclusively discovered traces of water on the moon. This was a path-breaking discovery. Chandrayaan-1 also discovered water ice in the North polar region of the Moon. It also detected Magnesium, Aluminium and Silicon on the lunar surface. Global imaging of the moon was another achievement of this mission.

On the other hand, the Chandryaan-2 is different from the earlier moon mission because it will attempt to soft-land its Vikram module on the lunar surface and deploy a six-wheeled Rover, Pragyaan on the moon to carry out several scientific experiments.

Chandrayaan-2 aims to widen the scientific objectives of Chandrayaan-1 by way of soft landing on the Moon and deploying a rover to study the lunar surface.The mission life of Orbiter will be one year whereas the mission life of lander (Vikram) and rover (Pragyan) will be one Lunar day which is equal to fourteen earth days.

After revolving around the Earth`s orbit for nearly 23 days, the craft began its journey to the moon on August 14. The mission took off from the Satish Dhawan Space Centre in Sriharikota on July 22.

India's second mission to the moon was approved by the cabinet in September 2008, just before the launch of Chandrayaan 1.

If the mission is successful, it will be yet another feather in the cap for ISRO whose reputation in this field has grown exponentially.

(With inputs from ANI)

Story highlights

Comparing Chandrayaan-2 with Chandrayaan-1, former ISRO scientist Nambi Narayanan said the basic difference between the two is that in Chandrayaan-2 we are doing soft landing.