On February 26, 2012 and 3 days in a row at approximately 8:30pm, I noticed a very bright light glowing green and purple hovering over the foothills. I am located in North Denver near 45th and Xavier Street. The object seemed to linger and hover for about 20 min and then it darted faster than a lightning bolt NW and behind the mountains. On the second day it did the same thing. On the third day the object was closer this time at least over I-70 and Sheridan from me that was 6 blks west and 2 blks north.
It only stayed for about 10 min and I noticed it had 2 balls of light glowing red and orange and purple below it. I tried to take a picture but it then zoomed away like the speed of light. I have a photo with it zooming away there were 2 objects in the photo not sure if it was the same one or if it split into 2.