A green and red light warped through the sky faster than any modern aircraft and disappeared.I had just gotten out of my car and was walking toward the front door of my house in Wheaton, IL, at around 10:30 PM when I looked south, up toward the sky, to suddenly see two lights zip across the sky faster than I have seen any craft fly in my life. I believe this had to be only a single craft, because the two lights appeared to maintain the same distance from each other while flying through the air. One light appeared to be red and the other green, just like a normal airplane would, but it covered a distance in what must have been less than a second that is physically impossible for any modern craft to travel. It was there and then it was gone in an instant. I could not decipher the physical shape of the craft because it was dark out and also because of the speed it moved at. I could see the lights traveling through the air however, and it looked like they left a streak behind them as it flew through the sky, but I think that had more to do with the fact ! that the lights were moving so fast. When I looked over in the direction where I thought the craft had traveled (It seemed to be heading southwest), I saw a bright blue light that was flickering a little. I pulled up an application on my phone to see if it was perhaps a planet or star rather than any physical craft I might have seen. From what I could tell on my phone, it was just Neptune. The craft I had seen warp through the sky was nowhere to be found. It was just gone an instant after I had seen it streak through the sky at impossible speeds.