I live in Elizabeth Colorado I happened to look up at the sky, this is about 8:45PM Mountain. Noticed two very bright objects traveling at a high rate of speed in unison or formation going from a southwest to a northeast direction. There were no FAA required lighting such as a strobe light or nav. lights and there was no sound. They appeared to have a slight turn or curve pattern. We eventually lost sight because the lights went behind our rather large threes on our lot.I was so amazed I had my wife look at this as well. We have no explaination for what we saw.