An orange ball that looked about the size of a golf ball.

The intensity of the orange colour pulsated from being fairly faint to quite bright. I watched an aircaft passed overhead just before the sighting which I could see and hear quite clearly and then the plane went out of sight. I was still looking at the sky when this orange ball came into view. The ball was travelling slower and was making no sound and was heading the same way as the aircraft when It suddenly vanished from view in a clear sky.

Never believed in any thing like this before, but this I could not explain, very strange!