I was laying down in the grass and looking up at the sky. I saw a small white/silver circle streaking across the sky. It was moving really fast and it was really high up. I told the people I was with and they thought I was crazy. By the time I looked back up it was gone. It was really high up and moving fast enough that I knew it wasn't a plane. The object was moving in a straight line. There were no clouds in the sky and it's also really hot right now.