Chandrayaan-1 vs Chandrayaan-2: All you need to know
The Moon is the closest cosmic body and is natural satellite of earth. It is said that the study on evolution of moon will help us to understand the history of solar system and earth. Several missions to the moon had been conducted. Even Indian Space agency is not far behind and has launched two moon missions Chandrayaan-1 and Chandrayaan-2. Comparison between the two is as follows:
Comparison between Chandrayaan-1 and Chandrayaan-2 moon mission
- Chandrayaan-1 was India's first moon mission. The Chandrayaan name means Chandra is moon and yaan is vehicle that is lunar spacecraft. Whereas Chandrayaan-2 is India's second moon mission.
- Chandrayaan-1 was launched on 22 October, 2008 from Satish Dhawan Space Centre, Sriharikota whereas Chandrayaan-2 was launched on 22 July, 2019 from Satish Dhawan Space Centre, Sriharikota.
- Chandrayaan-1 made more than 3400 orbits around the moon and was operational for 312 days till 29 August, 2019. Whereas the mission life of Chandrayaan-2 orbiter is one year and Lander and Rover was one Lunar Day that is 14 earth days.
- Total 11 scientific instruments were onboard with Chandrayaan-1 spacecraft. Five of them were Indian and other six were from ESA (3), NASA (2) and Bulgarian Academy Sciences (1). In fact two ESA instruments had Indian collaboration. In Chandrayaan-2, the orbiter carries eight payloads for mapping the lunar surface and to study the outer atmosphere of the Moon. The Lander carries three scientific payloads and Rover carries two.
- The lift of mass of Chandrayaan-1 was 1380 kg while Chandrayaan-2 weighs 3850 kg.
- Chandrayaan-1 was launched by India's Polar Satellite Launch Vehicle, PSLV-C11 from Satish Dhawan Space Centre, Sriharikota. Whereas Chandrayaan-2 was launched by GSLV MK-III M1 launch vehicle from Satish Dhawan Space Centre, Sriharikota only.
- Chandrayaan-1 discovered some traces of water on the moon. Also, in the North polar region of the Moon, Chandrayaan-1 discovered water ice. Some minerals on the surface of the Moon were also detected by Chandrayaan-1 that is Magnesium, Aluminium and Silicon. Another achievement of this mission was the global imaging of the moon. On the other hand Chandrayaan-2 objectives are widen by doing soft-landing on the lunar surface and deploying a rover on the surface of the Moon unfortunately it couldn't happen. But definitely, in future ISRO will be able to do so. Also, to study the evolution of Moon and to understand the history of the solar system and earth.
Know more about Moon
- What is the distance between Moon and Earth?
Ans. The average distance between the Earth and the Moon is 3,84,000 km.
- Do you know about the temperature on Moon?
Ans. The temperature of moon varies that is the side that receives sunlight becomes hot at about 130 degree Celsius and cold at about -180 degree Celsius during night.
- Why scientists mostly focus on Moon? Why study on Moon is an important aspect?
Ans. It is important to understand the evolution of Moon which in turn help us to understand the history of solar system and earth.
- Is life is possible on Moon?
Scientists believed so but so far none of the lunar missions have detected any signature of the presence of life on the Moon.
- Why we see only one side of the Moon and why on Moon one lunar day is of 14 earth days?
Ans. Moon orbits around its axis and around the earth in the same time that is 27.3 days. When Moon orbits, it always presents the same side towards the earth. It is because the Earth's gravity slowed the rotation of Moon and it matches with the Earths time to go around. Therefore, Moon takes same time to revolve around the Earth as it takes to spin on its axis that is 27.322 days.
So, now you may have come to know about the moon and ISRO’s mission Chandrayaan-1 and Chandryaan-2.