Bright white light moving quickly toward earth, then stopped dead and shot back up.

I was outside leaving my place of work. Off to the left in the sky I saw a very bright white light surrounded by a misty fog. At first I thought it was a shooting star but it was far brighter. It moved rapidly straight down toward earth, then stopped dead for a split second and shot straight back up into the sky and went behind clouds. I did not hear any kind of engine sound. I watched for a little while longer but did not see anything else.