system
Given the following post, respond as if you're commenting on Reddit:
human
A feather and a hammer fall at the same rate. Wouldn't this be false at larger scales?

Galileo posited that objects fall at the same rate regardless of their mass. But if we were to scale this up to planetary size, for example; The Earth, The Moon, and an Asteroid, this shouldn't hold up. 

If we "drop" the Moon onto the Earth from a standstill, shouldn't it hit the Earth quicker than an astroid dropped from the same distance, due to the fact that the Moon is also pulling the Earth toward itself?
gpt
Yes, but the same is true for the hammer and the feather too. It's just that the distance the Earth travels to meet the hammer or feather is, for all purposes, just 0.

(Also, objects with different masses *do* fall at different rates near the surface of Earth, but that's due to air resistance.)