Reddish orange orb floating through the sky.Me and my mother were driving north bound on i93 over the bridge coming from quincy into boston when we both noticed what could only be initially described as "a kite on fire" BUT after taking into consideration the time of day (6 pm) and the fact that it was moving south at what seemed to be 20 to 40 mph at what seemed to be 40 to 100 feet i the air. This was very strange and fascinating. I'm both perplexed and compelled to find out what that was!!!