I’ve read that at the center of large celestial bodies there’s zero gravity (or close to). While confirmation would be nice, if true, I’m wondering how large that area can actually be and moreover, does it scale up with more mass and/or even size - that is, does the sun have a larger center area of low (zero?) gravity than the earth and so on with evermore mass. Or is that area the same regardless of mass’ size?
Thank you
There is no area or volume of zero gravity inside planets or stars. It exists as a point, but since it’s a point, it has zero size.Go in any direction from that point, no matter how little. Now more mass is behind you than in front of you; you feel gravity pulling you back.Edit: Seems I was wrong, sorry.
“If the body is a spherically symmetric shell (i.e., a hollow ball), no net gravitational force is exerted by the shell on any object inside, regardless of the object’s location within the shell.”
So it’s not zero but low gravity and increases the more mass-I leave behind me as I move out from the center?
That’s exactly what I meant, yes.
I’m not sure if it was correct though, edited my previous comment. Though maybe you did not ask about hollow bodies.