Astronauts are a huge part of physics. they are they only ones who have yet expericence the very small gravitational pull on the moon. They go on trips to the moon to find new information and new planets. On the moon the gavitaional pull in much less than on the earth. This is due to the fact that the moon is farther away from the center of the earth. On earth the verticle acceleration is 9.81 downward therefore, on the moon it would be MUCH smaller becuase it is way farther from the center of the earth.