Hey there
Both the branches are almost same. 1st and almost 2nd year is entirely same for both the branches however aerospace deals with outer space also so you will have to learn a bit more in this branch though it's all up to you which branch you wanna choose as in India there are only a few good institutes for these branches so you will have to secure very good ranks to get into top colleges having these branches like iist, Anna etc.
Good luck
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