I was getting into my car when I noticed a bright flash in the sky, I looked up at about 80 degrees (about a mile away) and noticed the light loose it’s brightness but kept a steady brightness. After slowing down the light moved directly across the path of a small airplane, and a distant star, then the light slightly changed direction and increased speed and altitude and a phenomenal rate. This light quickly dissipated. No sound, no emissions, no blinking lights. I’m sure the people in the plane should have seen it. And if anyone else was looking up at the sky that night. It was a very bright light. And it was able to change speed very quickly.