Here is something to think about - even in the vastness of the American West, the glow from cities has become so bright that places with truly dark skies at night are becoming an endangered species. In the continental US, experts predict that in a decade, there will be just three areas where the sky will be dark enough to see the Milky Way clearly, the Arizona Republic reports. One area covers part of eastern Oregon and western Idaho, another includes parts of Nevada and western Utah, a third takes in parts of northern Arizona and southern Utah-and the latter two are in danger from the bright lights of Las Vegas and Phoenix, which can be seen for more than 200 miles. Take time to look up now and then, and especially this month - lots to see in the October night sky!