Stationary bright flashing light colors of white, red, blue, and green blinking rapidly in Massachusetts eastern sky. I watches this for 30 minutes, it didn't move in the slightest. It continued longer than 30 minutes I just wasn't able to observe it any longer. I was unable to get good video or pictures due to it being so high in the sky but I did take several with zoom and without. Very bizarre, I've never seen anything like it and I am a constant star gazer.