system
Given the following post, respond as if you're commenting on Reddit:
human
How close is the shape of our Sun to a sphere?

I know the Earth has a 'bulge' at the equator / is flatter at the poles because of its rotation. Does the Sun have a similar 'bulge' because of its rotation (or perhaps because of the pull of all the planets being along one plane)?
gpt
The amount that a rotating sphere is "squashed" (gets an equatorial bulge) by centrifugal effects can be measured by its oblateness, with a perfect sphere having zero oblateness. Earth is 0.0033528, while the Sun is 0.000006, much closer to a sphere due to its much stronger gravity and slower rotation.