Stars Above, Earth Below: A Guide to Astronomy in the National Parks

About Tyler Nordgren

Dr. Nordgren is an Associate Professor of Physics at the University of Redlands. As an observational astronomer he has written over two dozen peer-reviewed papers on pulsars the interstellar medium star formation in galaxies the distribution of dark matter in galaxies and the atmospheres and pulsation of red giant stars. In addition he has professional interests in archaeoastronomy light pollution and science education. These interests were developed during positions held as an astronomer at the U.S. Naval Observatory and then Lowell Observatory in Flagstaff Arizona. Both institutions have worked diligently and successfully with local governments to establish light pollution ordinances. Dr. Nordgren has designed and built sundials including a two-story dial at the University of Redlands and is one of seven scientists and artists that turned the NASA Mars Exploration Rover camera calibration targets into working Martian sundials. These Marsdials have become the most photographed objects of the Spirit and Opportunity Rover mission. In addition while at the U.S. Naval Observatory and later University of Redlands he worked with NPS park managers at Wupatki National Monument and Chaco Culture National Historic Park to photograph alignments of ancestral Puebloan kivas with respect to the North Star. In 2005 Dr. Nordgren began working with Chad Moore leader of the National Park Service Night Sky Team who has developed a method of quantifying the amount of light pollution in the skies above the national parks. With his support Dr. Nordgren is working with the U.S. National Park Service to spend his sabbatical during the 2007-2008 academic school year in the national parks writing the remainder of the book.