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Hopefully :) and I have never heard of a mirror less, but I read that a full frame is what I need to take better photos of the stars (astrophotography). I try with my T3, but never have any good shots.

Mirror less cams have different mechanics as compared to DSLR. They are fast, and small Lot of pros I know have moved to mirrorless . Check topend Sony Alpha a7R very expensive though, available is different price ranges as well. Full frame is not a must have for Astro. Keep exploring T3 :)

Haha cool. Thanks for the tip :)