Context: ISRO is gearing up for the next lunar mission ‘Chandrayaan-4’, to build on the accomplishments of Chandrayaan-3 mission (2023) while attempting more complex objectives.
Chandrayaan-4
oPropulsion Module: Guides Chandrayaan-4 in lunar orbit before separation, similar to Chandrayaan-3.
oDescender Module: Facilitates the lunar landing process, akin to the Vikram lander on Chandrayaan-3.
oAscender Module: Responsible for collecting and storing lunar samples before ejecting from the lander to begin the return journey.
oTransfer Module: Grabs the ascender module, leaves lunar orbit, and heads back to Earth before detaching the capsule with the rock and soil samples.
oRe-entry Module: Capsule carrying the lunar regolith that will undergo re-entry and land on Earth for further analysis.
oPolar Satellite Launch Vehicle (PSLV) launches the Transfer Module and the Re-entry Module.
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