Bright light moved in straight line rapidly across 4:45am sky in Thunder Bay. No differentiation in size shape colour or brightness.I was sitting on my front stairs at 4:45am, looking toward the sky to watch the Perseid Meteor Shower. I was facing north-east looking up at roughly a 45 degree angle. I noticed a few meteors falling from the sky, and then my eye caught a bright light which looked just like a star, moving rather quickly from my left to right. It popped into sight from behind some trees, moved very rapidly across my field of vision, and disappeared to my right when I could no longer see past my house. What makes me believe it was not a meteor is that for the whole 10-15 seconds that I was able to look at it, it moved in a perfectly straight line, it was moving too slow to be a meteor, but too fast and high to be an airplane. Also, it didn't get brighter, or fade out. It remained consistent in brightness and speed the whole time.