diff --git a/system.md b/system.md
index 9811e4d..6001b7a 100644
--- a/system.md
+++ b/system.md
@@ -194,6 +194,8 @@ rain, snowなどのweatherでは`postprocess volume`を使って画面に水滴
 ![](https://git.syui.ai/ai/ue/raw/branch/main/img/ue-2024-11-18-220605.png)
 
 - https://www.unrealengine.com/marketplace/ja/product/twinmotion-high-tech-pack-1
+- https://eyes.nasa.gov/apps/solar-system/#/earth
+- https://eyes.nasa.gov/apps/asteroids/#/planets/earth
 
 ## chair