Normal heavnly bodies do not travel in geometric patterns.

It was in n.e. Denver. I spotted a blank spot in the deep sky. Like dark matter, but only larger. In the shape of a tri-angel. Then at each corner at a time the craft stoped and left a light likened to a star. The the light went into the center. Where it stoped for a few minutes. It seemed to go straight up. Obviously at speeds faster than I can guess. When it dissapeared the three lights did also. The sky returned to normal. I could see the back ground stars, etc. I was looking south at about 75 degrees elevation.
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Witness indicates that the date of the incident is approximate.  PD))