Is Tom Aware Light Has Been Slowed to Four Meters a Second Under Vacuum With Extreme Low Temperatures?

light has been slowed to four meters a second under vacuum with extreme low temperatures. Temperature doesn't affect the speed of light because it doesn't have mass. You can't actually see stars through the mooni doesn't doesn't happen. Light can bend around the moon and the corners on the sides. It's slowed by putting water and stuff in its way.