For objects in orbit of Earth, does the force of gravity vary depending on where the object is in its orbit? Would astronauts be slightly taller at one point of an orbit than at another point (assuming they’re ‘standing’ with feet towards Earth)?

Question

For objects in orbit of Earth, does the force of gravity vary depending on where the object is in its orbit? Would astronauts be slightly taller at one point of an orbit than at another point (assuming they’re ‘standing’ with feet towards Earth)?

In: Physics

Answer 1

It doesn’t matter for practical purposes in orbit. But variations in local gravity are a thing and they are important to geologists and geophysicists. Measuring local, gravity can give you an idea about the structure of the crust below.