We cannot create sufficiently big gravitational attractor as the Earth is. And so, it might look as people cannot inhabit space stations for a really long stay. Simply, human organisms demands weight and it is our destiny to remain close to a big planet, as we are now. Weight is a vital condition for our life to go normally. The devorce between gravitational force and weight can be discovered in a debate and motivate students to explore the way to create weight in space.
Recent studies shows the weightlessness is a state of potential dangerous for humans.
It might look as preventing people from space explorartion. The problem can be solved basing on th efact that weight is a concept which is different from the gravitational force. Weight can be created in a specially dezigned stations or ships. By varying the speed of rotation scientists change the weight of pilots. The KIE Group.