I was driving east bound on I-24 towards Murfreesboro TN. Just before reaching the I-840 exit I saw what looked like a bright green fireball drop out of the sky. I did not see a large explosion or very much of a tail. I've never seen one of these before so I just assumed I was seeing things. But when I got home I did a YouTube search and saw videos very similar to what I saw that occurred in on Feb 6 in the upper midwest.