diff --git a/sim_scenes/science/lagrangian_points_2.py b/sim_scenes/science/lagrangian_points_2.py
index 6dcf214ff50f5701f18167d2a5f4c34b8685ea79..548647050d57da10c94b41aaca40dadddf364675 100644
--- a/sim_scenes/science/lagrangian_points_2.py
+++ b/sim_scenes/science/lagrangian_points_2.py
@@ -11,7 +11,7 @@ import math
 from bodies import Earth, Moon
 from common.consts import SECONDS_PER_HOUR
 from objs import Satellite
-from sim_scenes.func import ursina_run, camera_look_at
+from sim_scenes.func import ursina_run, camera_look_at, create_sphere_sky
 from simulators.ursina.entities.body_timer import TimeData, BodyTimer
 from simulators.ursina.ursina_event import UrsinaEvent
 from simulators.ursina.ursina_mesh import create_connecting_lines
@@ -68,6 +68,7 @@ if __name__ == '__main__':
         # 摄像机看向地球
         camera_look_at(earth)
         camera.rotation_y = -90
+        create_sphere_sky(scale=8000)
 
 
     def on_timer_changed(time_data: TimeData):
@@ -83,7 +84,7 @@ if __name__ == '__main__':
                 [satelliteL4, satelliteL1], [satelliteL5, satelliteL1],
                 [satelliteL4, satelliteL2], [satelliteL5, satelliteL2],
                 [satelliteL4, satelliteL3], [satelliteL5, satelliteL3],
-            ])
+            ],alpha=0.5)
 
 
     # 订阅事件后，上面的函数功能才会起作用
@@ -102,5 +103,6 @@ if __name__ == '__main__':
                # position=(-300000, 1500000, -100),
                position=(0, 1500000, 0),
                show_timer=True,
+               cosmic_bg='',
                # show_trail=True
                )