Astronauts on the International Space Station appear weightless because
- Acheck_circle
They are in free fall (continuously falling around Earth).
- B
There is no gravity at that altitude.
- C
Their masses become zero in orbit.
- D
They are above the atmosphere.
Explanation
They orbit because gravity pulls them — they're in continuous free fall. Apparent weightlessness arises from the lack of normal force on them, not from absence of gravity.