I thought it was a bomb at first because it was coming straight down then I thought to myself a bomb wouldn't look like a big bright like I've seen metors before it had no tail. size of a street light even slightly bigger.I thought it was a plane but they would look as big round light.space trash not sure what that would look like if it were a UFO it wouldn't be falling it?Never heard of a fireball until I started looking up what it was closest thing to what I saw.I told people too look, by the time they looked up the ball was behind trees on the horizon.The park I was at is on the Hudson River and the direction I was looking at the roads go up so I was basically at the bottom of a hill looking up and seeing it before it went behind the horizon line of the trees houses and building up the bottom of the hill where I was standing.