Glowing Discovery

Perhaps you saw a glow in the sky Wednesday night? A number of people in North America did. Some, like Abe Megahed of Madison, Wisconsin, even took pictures of the beautiful glow. So what celestial event caused the lovely light in the sky? Urine, astronaut urine to be exact, as well as other waste water from space shuttle Discovery. It was a larger than usual dump, 150 pounds, due to the new policy of not dumping waste water while docked at the space station. So 10 days worth was dumped at once after undocking. I guess that's one example of making a silk purse out of a sow's ear. Story and picture available here- http://www.space.com/missionlaunches/090911-space-water-dump.html