I don't understand how the Luna-25 can have a total Launch weight of 1750 kg and almost reach the moon in a WEEK in a rather minimal trajectory (last minute glitch notwithstanding) half-swing around the earth to go and half swing around the moon to land, but the Chandrayaan-3 has a much heavier launch mass 3900kg, but take more than a month to get to the moon? What is CHandrayaan doing with all that mass?

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