How to find closest collision point on sphere to surface

Unity Engine
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1

I’m trying to find the closest collision point on a sphere to the surface as you can see here:

9067993--1254394--upload_2023-6-9_8-56-53.png
9067993--1254394--upload_2023-6-9_8-56-53.png818×516 156 KB

I’ve already tried Physics.SphereCast and Physics.SphereCastAll but both don’t seem to work for me.
(Maybe because I’ve set their direction value to Vector3.zero?)

Is there another way I could achieve this?

2

Calculate the closest point on the surface to the center of the sphere using this: Unity - Scripting API: Physics.ClosestPoint

Then it’s just a matter of projecting the point to the surface of the sphere.