Jerry T. Bonnell is an astrophysicist with the Universities Space Research Association who has been working at NASA since 1988. He lives in Greenbelt, Maryland. Robert J. Nemiroff is a professor of physics at Michigan Technological University. He lives in Houghton, Michigan. In 1995, in collaboration with NASA and co-author Jerry Bonnell, he created the website Astronomy Picture of the Day (http://apod.nasa.gov/), which they continue to maintain.