To create an earth in Unity, refer to the following steps:
- If you do not have a Sphere child of SolarSystem, create one now (in Hierarchy, right-click on SolarSystem, then go to 3D Object | Sphere). Rename it Earth.
- Ensure it is a child of SolarSystem.
- If necessary, reset its Transform (Transform | gear icon | Reset).
- Remove its Collider (Sphere Collider | gear icon | Remove Component).
A collider is a component that defines the shape of an object for the purpose of detecting physical collisions. It is invisible and is typically a simpler geometry than the object itself, since physics calculations can become computationally very expensive. We are not using Unity physics in this project so our planets do not need colliders. ...