Nope, "regardless of size or shape or weight,will free fall with the same acceleration in a vacuum." The accelration is due to what ever value gravity has, the difference in an atmosphere is down to drag where size or shape will have an effect. Take a sheet of paper, and a ball, drop both .. the result is the sheet of paper falls far more slowly than the ball, now ...crunch the paper up into a ball and repeat.. both fall at the same speed ... you have not added any mass to the paper by crunching it up though.