Quick lineup of all 3 Human Lander System contenders, to scale. Expendable tanks and transfer element not shown. pic.twitter.com/Awn5pTYunH— Mack Crawford (@brickmack) May 28, 2020
Quick lineup of all 3 Human Lander System contenders, to scale. Expendable tanks and transfer element not shown. pic.twitter.com/Awn5pTYunH