I have spent many a night gazing at the sky. I have never seen anything this incredible. it lasted at least 20 seconds maybe longer. My 11 year old sons knees started to shake and after about 15 seconds. He got nervous and ran inside. My 8 year old son and me could not believe how long it lasted even after he ran in the house. We were trying to use a telescope they got for Christmas and never expected that to happen