> Newton's gravity equations deal with bodies like the Moon as having uniform mass. Let’s not make a joke of ourselves. Newton’s gravity equations deal perfect

> Newton's gravity equations deal with bodies like the Moon as having uniform mass. Let’s not make a joke of ourselves. Newton’s gravity equations deal perfectly well with non uniform masses. You just need to integrate properly. But all of this is beside the point. Obviously you are not going to land open loop. You need sensors which tell you where you are and how fast you are going.