light flickering followed by dark mass at low speed which was gone quickly and quitlyI saw a light that flickered in the sky. The light dimmed as a falling star may. I think at first I thought it was a falling star. I kept looking in that spot that the light came from, and it had a mass. The mass was really deep in contrast to the sky. The haze from the sky did not match the mass, so it was really out of place. Especially seeing the light for that one second, then the mass the other second. The mass was clear, it looked like a submarine, but in terms of size their is no way of telling the proportions. I feel like I looked up at a time when it was only visible travelling at that speed. It was gone when I checked again, and there is still no site. I guess it is something that you have heard before. I am really into the moon changes, and star constallations, and this is something that was too quiet to be a jet and to fast for making no noise at all. It was not a aircraft, it was nothing, just a shape of dark contrast that was flying probably around ten thousand feet, making no noise.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))