* Planets and Stars are Round: Planets and stars are generally spherical (round like a ball) because of their own gravity. Gravity pulls equally in all directions, which causes them to become as round as possible.

* Not Perfect Circles: While they are close to round, they are not perfectly circular. Planets and stars can be slightly flattened at their poles and bulging at their equators due to their rotation.

So, the answer is:

* Yes, they are roughly spherical.

* No, they are not perfectly circular.

Let me know if you have any other questions!