Chandrayaan-4 will involve at least two separate launches of the heavylift LVM-3 rocket that will carry five different components of the mission which will be assembled in orbit.
India sent an aquanaut 5,000 metres deep into the ocean in a first-of-its-kind expedition in partnership with France, as part of preparations for India's ambitious Deep Ocean Mission.
Engineers at the National Institute of Ocean Technology in Chennai have already designed the steel sphere that will house the aquanauts for their journey, he said.
The new year will witness two unmanned missions under the "Gaganyaan" project, deep ocean exploration project, "Samudrayaan" and many more.
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