Was it an airplane? Was it a satellite?
The strange triangular formation of lights hovering above Lafayette, Colo., last week has many wondering if it's a sign that we're not alone.
Leroy van der Vegt and his son Nick captured the sight on camera.
"It was completely quiet. No noise at all," van der Vegt said.
The unidentified red lights did not blink but were in a triangular shape as they hovered in the sky.
Van der Vegt doesn't know what it was but he is sure that what he saw was not a satellite, helicopter or airplane.
Eventually, the triangle headed northeast and the lights faded, van der Vegt said.
Lester Valdez and all of his neighbors saw the unidentified lights.
"I have never witnessed anything like that," said Valdez.
He said they looked like tiny, bright alien ships from "Close Encounters of the Third Kind."
"It was exactly something like that where you see an object and they all got into a pattern and they stood in a pattern, and they all moved in a direction and then they pretty much dropped and that was it," Valdez said.
Grant Gazvoda and two friends sat in front of a Lafayette convenience store talking about the lights. Gazvoda said he saw them Monday night as he and friends were out stargazing.
"When it flew over, there was a really weird energy. Almost like a hyper need to move. My mind started racing. My body started shaking," Gazvoda said. " I freaked out at that point."
UFO Spotted Over Colorado
When asked what he thought the lights could be, Gazvoda said speculation is running rampant through town.
"UFO, maybe government stuff. People are saying aliens," he said.
Skeptics like Lafayette residents Katie and Kevin Caron say there must be a reasonable explanation for the lights that doesn't involve little green men.
"There's a lot of things you can't explain but the idea of it being an alien spacecraft is pretty wacky," Kevin Caron said.
ABC News called the Federal Aviation Administration but they declined to talk.
For now, it's clear this is an unidentified flying object.