Was stargazing last night and spotted an object traversing the sky from roughly East to West. It had a bright light that was intermittently flashing but with three different intensities. The "third" flash was really bright like a camera flash. Never seen a plane with lights this bright and was not a satellite (like any that I've ever seen), nor was it the ISS as that was not in this part of the world at this time. Any ideas anyone?
It seems you saw a Tumbling satellite. They don't have a constant brightness. This is a result of satellite's rotation. Learn more: http://www.satobs.org/tumble/tumbleintro.html