From NASA Images blog:

NASA Images has been selected as one of the MARS Best Free Reference Web Sites of 2010, an annual series initiated under the auspices of the Machine-Assisted Reference Section (MARS) of the Reference and User Services Association (RUSA) of the American Library Association (ALA) to recognize outstanding reference sites on the World Wide Web. This years list consists of 30 sites recognized by MARS as outstanding for reference information, view the list here.

Kudos to the NASA Images team: Jon Hornstein, Jake Johnson, Greg Williamson and Samantha O’Connell.

-Jeff Kaplan