Hey @mjsu20! Welcome to the forums!
We are going to need a bit more context as it’s really hard to tell what is happening from just the video you linked. A few questions to get things started:
- How are you setting up your moon? It looks like you are trying to add a second sun?
- Can you share screenshots of your blueprints?
Any additional information or specifics you can provide will go a long way in solving your problem!