Gravity pulls on objects equally, whether they be a hammer or a feather. I was surprised some friends and family thought I was talking nonsense when I said that in an airless environment a feather would hit the ground the same time as a hammer. The only reason a feather drifts down to the ground while a hammer plummets on Earth, is air. Gravity does the same thing to both of them. So here is a video, taken on the Moon, to prove it.