What happens to the acceleration of gravity as we leave the surface of Earth towards space for example, the international space station orbits Earth in about 408 km above Earth's surface. Although the astronauts feel weightless, is it because there is no gravity? Calculate the acceleration of gravity at this altitude.

What happens to the acceleration of gravity as we leave the surface of Earth towards space for example, the international space station orbits Earth in about 408 km above Earth's surface. Although the astronauts feel weightless, is it because there is no gravity? Calculate the acceleration of gravity at this altitude.