I thought, I was about to see a shooting star, when a lime green ball of light erupted and trailed downward for over 30 sec.It was a large sized lime-green fireball. It fell straight downward. I was traveling in my car, so I believe it was to be in the northeastern sky.((NUFORC Note: We are approaching the peak of the Perseid Meteor shower, which occurs on August 12 of this year. This may have been a sighting of an early meteor from hat shower. However, a 30-second sightng is extremely long, and extremely unusual for a meteor. PD))