Light in sky seen hovering rather low in the sky. Light was about 3-4 times the size of a large star. Looked odd.

It was around 5:30 pm. It was dusk but still light outside. As my son and I were pulling out of the Walmart and turning left onto Franklin rd, I noticed an oddly bright, low, and large “star” in the sky almost directly in front of us. I asked my son what he thought it was he said it could be a big star or planet. We both said it was still so bright outside to see a star and it was definitely too large for a star. I thought it was also very low in the sky. Our light changed and I said well it’s probably a planet or something and we made a right hand turn onto Franklin rd and ran another errand. About 40-45 minutes later we were finished. It was now completely dark and we were heading home driving down Bent mountain rd when we spotted it again. It was in the exact same spot but we were seeing it from the back side now. A different perspective from the first time we saw it. It was now a little more discernible. It was very bright in the sky and lower than any other “star”. I now noticed it was oddly shaped. It was circular but with possibly an appendage coming from the top left area. My son even said he thought something was coming out of it. It was now emitting a bluish green light from only the top left of the “craft” over the area where, what I thought was some kind of appendage. My son thought the appendage was just light glare. The bottom of the “craft” was emitting white light. I could now tell it had a shape, meaning I could discern it was a 3 dimensional circular object. Not just a light in the sky. It appeared to be a craft of some type. I cannot say how high in the sky it was, other than to say it was about 4x the size of a large bright star. My son thought it maybe moved a little but I thought it was stationary. It was difficult to tell because we were driving about 45 mph on a fairly winding rd. I’m certain it never moved. We viewed it almost the entire drive down bent mountain rd. I was driving so I only was able to look at it for a few seconds then turn my eyes back to the road. It was in view in the neighborhood of about 4 minutes. We lost sight of it once we got closer to 12 O’clock Knob rd. We made our right hand turn on that rd and then a left onto Lost Mountain rd. I was hoping we would be able to see it again once we arrived at our house but we couldn’t from our elevation. We live in a Mountain area surrounded by trees. Anyway, there were a lot of people on the road and I can’t imagine we were the only people to notice it. One other thing that may be helpful. We live about 30 min from Roanoke airport and we saw an airplane in the vicinity of the object.