Update app.py

app.py

@@ -54,6 +54,7 @@ def create_planet_flyby_animation(planet, radius, duration):
 def add_animated_space_rocks():
     bpy.context.scene.render.fps = 10
     duration = 2
+    radius=2
     for i in range(30):
         bpy.ops.mesh.primitive_uv_sphere_add(radius=random.uniform(0.01, 0.1), location=(random.uniform(-10, 10), random.uniform(-10, 10), random.uniform(-4, 9)))
         space_rock = bpy.context.active_object