Weightlessness in a satellite

Guion Bluford Experiences Weightlessness on th...

Guion Bluford Experiences Weightlessness on the KC-135 – GPN-2002-000148 (Photo credit: Wikipedia)

 

Why does an astronaut feel weightless in a space capsule orbiting the earth?

I’ve gotten a key point saying that the space capsule orbiting the earth has a centripetal acceleration, but I cannot figure out why is it related to the question.

 

Asked Ganondorf Jallida

 

Answer: The centripetal acceleration is provided by the force of gravity. Since the force of gravity is completely used up in providing the centripetal acceleration to the space capsule, the astronaut feel weightlessness.