Chandrayaan-4 is a planned advanced lunar mission by ISRO focused on demonstrating end-to-end lunar sample return technology. The mission architecture is expected to use two separate heavy-lift launches, likely with LVM3, placing multiple spacecraft elements into Earth orbit that will perform autonomous rendezvous and docking, a critical new capability for India. After trans-lunar injection, a composite lunar spacecraft will enter lunar orbit, deploy a lander for a precision soft landing near a