The effects of gravity drop at the distance squared. I believe it technically is felt up to the very edge of the universe (if there is one) or infinity. At a more reasonable scale, it would only be if the card got close enough to fall into another bodies gravity well than the Earth’s that it wouldn’t fall back to earth. That’d be a house of cards somewhere around 300k-350k km high to get pulled onto the moon.
The effects of gravity drop at the distance squared. I believe it technically is felt up to the very edge of the universe (if there is one) or infinity. At a more reasonable scale, it would only be if the card got close enough to fall into another bodies gravity well than the Earth’s that it wouldn’t fall back to earth. That’d be a house of cards somewhere around 300k-350k km high to get pulled onto the moon.
Cheers. I am very rusty on most of that stuff.