“Earth and Sky,” the radio series on National Public Radio, featured the research of UALR Professor Marc Seigar in which he and his partners found a simple method of judging the mass of black holes.

Seigar, assistant professor of physics and astronomy in the College of Science and Mathematics, and his research team have concluded that the larger the black hole at the center of a spiral galaxy, the tighter the galaxy’s arms wrap around itself. If correct, the simple relationship would give researchers an easy way to learn about black holes.

Producers of “Earth and Sky” interviewed Seigar at last spring’s meeting of the American Astronomical Society in St. Louis where the UALR professor presented his research. The program is heard on 1,600 radio stations.