As an astronomy writer, Wanjek worked at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center in Greenbelt, Maryland until 2007 and freelanced for astronomy magazines such Sky & Telescope and Astronomy.
As a professional in the field of astronomy, Wanjek was associated with NASA's Goddard Space Flight Center in Greenbelt, Maryland until 2007 and wrote for astronomy magazines including Sky & Telescope and Astronomy.