The outer planets in our solar system are gas giants, which means they are primarily composed of hydrogen and helium. This composition gives them a very different shape compared to the rocky inner planets.

Here's a breakdown:

* Shape: Due to their large mass and rapid rotation, gas giants are oblate spheroids, meaning they are slightly flattened at the poles and bulging at the equator. Think of a squashed sphere.

* Composition: They lack a solid surface and have a thick atmosphere with layers of clouds.

* Internal Structure: They have a small, rocky core surrounded by layers of liquid hydrogen, metallic hydrogen, and a gaseous outer layer.

Examples of outer planets and their shapes:

* Jupiter: The most oblate planet in the solar system. Its equatorial diameter is about 9% larger than its polar diameter.

* Saturn: Slightly less oblate than Jupiter.

* Uranus: It has a more extreme oblateness compared to Jupiter and Saturn, due to its faster rotation.

* Neptune: Similar oblateness to Uranus.

It's important to note that the shape of these planets is not perfectly uniform, and they have subtle variations due to internal processes and atmospheric activity.