Billions and Billions?
The International Dark Sky Association
Since the immortal phrase by astronomer Carl Sagan was said on television in the '70s (remember "Cosmos"?) the stars have stayed up there but our ability to see them has been decreasing rapidly. Thanks to mercury and sodium vapor lights we pollute the night skies with light, effectively eliminating any chance to see the stars. There are still a few up there that are visible in urban/suburban areas, but the skies don't look anything like they should.
I've lived in several urban areas and visited others. Houston, Dallas, Lafayette, Shreveport -- they all have the same problem: a night sky that looks yellowish from all of the lights shining upward with only a few stars being visible. The interesting thing is that the outdoor lighting is shining the wrong way! Have you ever seen an old-fashioned flash-bulb attachment for a camera? They have this circular metal reflector behind the flash bulb. Why? Because the photographer doesn't want the light in his face, but he does want it focused forward. There are similar devices that can be attached to most outdoor lighting, including the major offenders -- mercury and sodium vapor lights. They just cost a bit more so cities don't purchase them. Dumb. We're squandering a special piece of the beauty of our planet. Would you buy a house on a lake and keep the blinds closed all the time? We've got one helluva good view if you're fortunate enough to be far enough in the boondocks to see it.
I'm an amateur astronomer, so I can tell you plenty of stories about trying to find places that are out of the way, dark, and safe for viewing. My luck has varied quite dramatically in that effort, but I remember finding the Holy Grail of locations. I have an aunt who used to own a ranch in Round Top, Texas, about 1 1/2 hours out of Houston. I've only been there once overnight, but it was an experience I still remember even after almost 14 years. It was a cold night close to New Year's Eve, and I walked out for a bit to look at the sky. The moon wasn't visible at all which made it that much more dramatic. The detail I could see with just my own imperfect sight -- the Milky Way sprawling across the sky, the Orion Nebula, and more stars than I thought could exist -- was incredible. I felt the presence of God more strongly standing there under the stars than I ever have in a church. It's an experience that transcends understanding unless you've been someplace similar.
It would be a travesty if we continue along our road of urbanization to the point where it's infeasible for the typical person to witness this sight and experience this feeling. Unfortunately, it's already happening. Mount Palomar, located in southern California about 100 miles away from Los Angeles, was one of the premier observatories for decades before more modern observatories started popping up in Hawaii, Chile, and other places. Now, Mount Palomar struggles to do research because Los Angeles has continued to grow since the '40s and its light pollution has reached the skies around the observatory. If Los Angeles had only purchased light shields for the outdoor lighting as they bought the lighting it wouldn't have been such a massive expense. They have laws in Los Angeles to completely encase oil rigs inside concrete enclosures to not offend people's sight. With that degree of pickiness, why not require the extra money for a light shield?
The irony is that the light shields focus most of the light downward where it can do some good. That means darker skies as well as brighter sidewalks and freeways. And if we don't need them brighter then we can use lower-wattage bulbs and save money, starting with the cost of the shields! It just makes sense all the way around...
So support the International Dark Sky Association and make municipalities stop throwing away our good view on the universe!
