I was sitting on my bed watching tv. I just had a feeling that I should look out the window in that direction. It just appeared out of nowhere and suddenly disappeared. At first I thought it was a shooting star but I've seen shooting stars before and they've never been anything like that. Also, the object was under the clouds. It only appeared for a second but it was a white object which left a green trail behind it. For the second that it appeared, it was moving at extreme speed, it appeared as quickly as it disappeared. Before I was calm, beginning of my holiday from work. Reaction was what the hell did I just see! I've always believe in alien life and that people do see UFOs but I never thought I'd see one. My first thought was to write down everything that I witnessed, the direction the object traveled in, the time so I am able to remember everything after. It just disappeared.