Why could an observer on the Moon never see a meteor?

No visible trail. When space debris hits the Earth's upper atmosphere, (typically at very high speed), the friction of its passage thru several miles of an ever-thickening mass of air will both slow its speed and heat its surface. read more

If you lie on your back under dark skies for a few hours, you are bound to see a couple meteors. The darker the skies, the more you will see. However, the best time to see meteors is during a meteor shower. In this case, the meteors resonate from a specific direction in the night sky, so you know exactly where to look. read more