2019-11-24 - Boulder, CO - Formation

At 4:40-4;58am my husband and myself witnessed a line of star-like lights That seemed to enter our atomosphere and move across the sky traveling south to north east. The lights were in a straight line formation, evenly spaced except every 8-10 lights, two were traveling almost abreast. They were moving at a steady speed. Definitely not aircraft. We thought satellite except for the numbers. We believe there were 75-100!! It was strange how the lights entered into our our view. Almost like they flew in through a port hole above Louisville Co. We are educated and not crazy. This was weird.