An astronaut orbits the Earth at geo stationary position. She appears to be weightless because there is virtually no gravitational force on her.

Astronauts appear weightless not because gravity is absent, but because they are in continuous free fall around the Earth. At geostationary orbit altitude (approximately 35,786 km), gravitational force is still about 89% of what it is on Earth's surface. The sensation of weightlessness comes from the fact that both the astronaut and the spacecraft are falling at the same rate, creating the floating effect.