taken from spacelab_walterThe International Space station is orbiting the Earth and therefore has a gravitational force acting on it and hence said to have microgravity. The scientist in it however also has some weight but is not able to experience it since they are falling as the whole station is orbiting (falling).If the floor is falling with you , your feet will not be on the floor, hence seen as floating.Hence the term weightlessness is only an experience!
