Fake alien invasion? 🤔🤨

Can someone please explain to me why people think there will be a fake alien invasion?? 👽 Is it to do with project blue beam?? Also what is project blue beam?? 😂 Was this leaked?? Or is it just a conspiracy?? I have been hearing about this for years, but never understood where it originated from. If someone can explain to me, I would appreciate it 🙂 👽 👍🏽