Assembling Main scene.

Assets/Scripts/ConstantRotation.cs

@@ -0,0 +1,17 @@
+using UnityEngine;
+
+public class ConstantRotation: MonoBehaviour
+{
+    public Vector3 Axis = Vector3.up;
+
+    public float RotationRate = 1f;
+
+    public void Update()
+    {
+        var rotation = transform.rotation;
+        
+        var delta = Quaternion.AngleAxis(RotationRate * Time.deltaTime, Axis);
+        
+        transform.SetPositionAndRotation(transform.position, rotation * delta);
+    }
+}