Looking south I noticed a bright light moving very fast towards me to the north. As it got closer over head it also seemed like it dropped in altitude and was not accelerating as fast. I could not completely see past the light or around it and am unsure if there was more object or just the light. For a second I thought I saw that it had a triangular shape with the light on one corner, but it went into trees and passed my roof as it dropped in speed over me. I heard nothing in the sky as it passed over me.