Here’s why. The sensation of weight we experience daily is not only due to the tug of gravity but also to our constant resistance to its pull. Were you to remove the supporting ground or floor beneath your feet, you would feel your weight begin to disappear as you start falling. Assuming that air resistance did not retard your plunge, you would surrender completely to gravity’s pull and become weightless.
To get the feel of this condition during training, astronauts ride in airplanes that are flown in large ballistic arcs. These practice sessions are brief, but they do create – if only for a few seconds – the buoyancy the astronauts will feel when gliding through their orbits in the space.
- How fast does a free falling object fall?
- Is there any specific difference between mass and weight?
- Why does a candle flame defy gravity and burn upward? What will happen on lighting a candle in space?
- Which has been the longest manned spaceflight so far? How long can astronauts stay in weightlessness?