Comet NEAT

Photograph courtesy T. Rector (University of Alaska Anchorage), Z. Levay and L. Frattare (Space Telescope Science Institute), and National Optical Astronomy Observatory/Association of Universities for Research in Astronomy/National Science Foundation

Comet C/2001 Q4, also known as NEAT, emits a blue-and-purple glow as it moves through the cosmos in May 2004. Its coma, or head, and a portion of its tail are visible in this shot, as are myriad stars. This image was taken by telescope from Kitt Peak National Observatory near Tucson, Arizona.