I've lived in Phoenix for just over 4 months and this is the second green fireball I've seen. The points in which I viewed them were within 5 miles and both were moving in a similar east to west direction. I've seen "meteor showers" before, but these 2 sightings were unlike and of those or any shooting start I've seen. Both were much larger in size and of the brightest green(almost neon green) in color.