There are quite a few interesting projects on the Indian Space Research Organisation’s (ISRO) to-do list in the near-future. The upcoming Chandrayaan-2 and the Gaganyaan manned mission planned for 2022 are two of the better-known big missions, but far from the only ones for which work is underway. The agency is also working on a total of seven interplanetary missions over the coming decade.
Among the destinations are Mars, the Moon, Venus, the Sun’s corona and interplanetary space to study space. The first of this will be India’s first landing on the Moon, planned for launch in July this year.
July 2019: Chandrayaan-2 mission
Later this year, the Chandrayaan-2 mission — India’s second moon mission after Chandrayaan-1 — is planned for launch on the heavyweight Geosynchronous Satellite Launch Vehicle Mark-III (GSLV-MkIII) rocket in July. The mission includes a lunar orbiter, lander and rover, all of which have been designed and developed indigenously by ISRO engineers.
The complexity and challenges of Chandrayaan-2 vs Chandrayaan-1. Image credit: ISRO
Once the spacecraft with all three modules reaches the Moon’s orbit, it will attempt to make a soft landing in a region 600 kilometers away from the lunar South pole. This will be the first time any mission touched down so far from the equator, according to a report in Science. The Vikram lander will separate from the orbiter and descend to the surface to make India’s first ever Moon landing around 6 September, ISRO estimates in the release.
The agency is in the final stage of testing for the Chandrayaan-2 orbiter, lander and rover, ISRO Chief Dr. K Sivan told reporters on the sidelines of the Yuvika-Young Scientist Programme for school students at the Satish Dhawan Space Centre in Sriharikota, adding that the three modules will be ready for launch by the end of May.
2019-2020: Aditya L1 mission
The Aditya-L1 mission is ISRO’s first planned probe to study the Sun’s corona and its atmosphere. It is expected to launch during 2019–2020 on a PSLV rocket from Sriharikota. The corona is the outer layer of the Sun, which extends thousands of km above the visible disc around it.
The Parker probe begins the first of its seven revolutions of Venus in a gravity assist en route the Sun. Image courtesy: NASA
Interestingly, it has temperatures over a million degree Kelvin — far higher than the surface of the Sun (6000 degrees Kelvin). How the corona gets heated to such high temperatures is still an unanswered question in solar physics, and something NASA’s Parker probe is currently exploring. ISRO’s Aditya L-1 will also soon follow suit and study this astrophysical mystery.
Mission Gaganyaan – December 2021/January 2022
In his 2018 Independence Day address, Prime Minister’s Narendra Modi announced that India will attempt to send astronauts to space on a spacecraft called the ‘Gaganyaan’ by 2022. The mission will make India only the fourth nation in the world to accomplish the feat if successful, he added. At Rs 10,000 crore, the Gaganyaan mission is India’s biggest space mission so far.
Crew Module along with the escape capsule on display at the Bangalore Space Expo in 2018. The Gaganyaan’s crew module to house astronauts, its life support systems to keep them alive in space, and the spacecraft’s environmental-control systems have already been developed, and are being tested at a new facility opened by ISRO for human spaceflight missions. The mission is “highest priority” for ISRO in 2019, the space agency announced, with plans to have the first unmanned tests for the mission in December 2020 and second in July 2021. If these tests are successful, the manned mission will happen as planned in December 2021.
Mangalyaan-2 (Mars Orbiter Mission-2)- 2022-2023
India’s second mission to Mars, the Mars Orbiter-2, is another planned mission by the Indian Space Research Organisation (ISRO) between 2022 and 2023. The Mangalyaan-2 orbiter will use aerobraking to lower its initial apoapsis and enter into an orbit more suitable for observations. India’s ISRO and French CNES space agencies were intended as partners building the MOM-2 module by 2020, but by April 2018, France was not yet involved in the mission. In a sign of encouragement, the Indian government funded the MOM-2 mission in its 2017 budget proposal, leaving ISRO mulling over whether the best path is a MOM mission with an orbiter, lander and rover will be feasible or an orbiter alone with instruments more sophisticated than those on MOM-1 would be the way to go.
Chandrayaan-3 mission by 2020
While the second mission in the Chandrayaan (India’s lunar exploration) programme is yet to lift off, K Sivan already announced that the third mission in the series will also be carried out in the coming decade. The Chandrayaan program was always intended as a multi-mission space programme.
An artistic representation of the Chang’e-4 rover on the moon. Image: CNSA
“The Moon is a good candidate as a staging point for carrying out our deep space human spaceflight missions, and Chandrayaan-2 will assess the suitability of the Moon for such activities,” Chairman K Sivan said in an interview to Current Science.
ISRO will also soon initiate a space robotics programme to look at the possibility of an Indian robot on the Moon, he added. With the first mission in the program featuring an Orbiter and the second featuring a soft lander and rover, it sure is interesting to consider what India’s third lunar mission might bring to the table. Could Chandrayaan-3 be the mission to put an Indian robot on the Moon.
Shukrayaan mission to Venus: 2023-2025
Our neighbouring planet Venus is often described as Earth’s ‘twin sister’ due to similarities in their sizes, densities, composition and gravity. Some theories suggest both planets share a common origin, forming at the same time from the same condensing swirl of gas and dust all those 4.5 billion years ago. Being 30 percent closer to the Sun than the Earth, Venus has a much higher exposure to solar radiation, effects of solar flares and other solar phenomena, which makes it an object of interest for ISRO to study.
ISRO’s Mission to Venus will be its third voyage to another world.
ISRO intends to send an orbiter mission to study the atmosphere of Venus, which is made up primarily of carbon dioxide. The Shukrayaan mission will study the dense, hot atmosphere of Venus and the planet’s surface using a probe.
The satellite configuration and payloads on Shukrayaan-1 are yet to be finalised. But the science objectives that will feed the design of the spacecraft are The “super-rotation” of the Venusian atmosphere and how it interacts with solar radiation and solar wind are also among the mission’s science objectives, according to an ISRO release.
EXPOSat Planetary exploration: 2020-21
The EXPOSat mission appears to be a follow-up to the AstroSAT mission, ISRO’s multi-wavelength X-ray astronomy observatory studying X-ray sources in the universe. Considering the great success of AstroSAT, the EXPOSat mission will further explore X-rays in the universe — specifically, the polarisation of bright X-ray sources in our universe.
An artistic rendering of the AstroSat satellite. Image courtesy: ISRO
These objects could be neutron stars, supernova remnants, pulsars and regions around black holes that could give scientists information about the electromagnetic nature of space radiation. Understanding space radiation better could be used to protect spacecraft and astronauts in the future, but also pave the way for space technology to better understand happenings in the universe.
These, K Sivan said at the briefing, are only some of the planned interplanetary missions ISRO has in mind for the decade to come.
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