I just saw a large green yellow streak cross the sky. It looked like a shooting star but way bigger. It seemed closer too. I’m in North Garden VA. It was heading north. It lasted for 5-7 seconds.
There was a fireball visible in VA at about 10pm EDT on the 28th of July
Other observers suggest it lasted about 3.5 seconds and was as bright as the full moon. The green colour was also mentioned by some. Videos are on twitter
A fireball is a bright shooting star. It is produced the same way a normal shooting star: a stone in space hitting the atmosphere. A brighter one is formed from a larger stone. A green colour would suggest the presence of nickel in the stone.
The "closeness" is an optical illusion. All meteors start about 100km above the ground. But your brain associates "brightness" with "closeness", so brighter ones seem nearer.