My wife and i were driving east on route 22 outside harrisburg right before the hershey exit and saw a blinding blueish white circular orb shoot across the sky in front of us about 500 to 600 feet up in sky. it was blinding through the clouds. it only lasted about 5 seconds to 8 seconds maybe less. it flew the entire width of the sky and disappeared without a sound or flash or anything. we thought it was a meteorite at first, but there was no burning trail behind it, and with how big it would have been no explosion from impact. at a disgrace of about 500 feet the object was about the size of a basketball so about 7 degrees coverage, making it about 73 to 80 feet across. it covered the distance of the visible sky in under 8 seconds with sharp angle change before completely disappearing.