The latest release from the National Academy Press is the free online version of Astronomy and Astrophysics in the New Millennium: Panel Reports. The book contains contributions from the Astronomy and Astrophysics Survey Committee, Board on Physics and Astronomy, Space Studies Board, and National Research Council. Although the online version is a "free, browseable, nonproprietary, fully and deeply searchable version of the publication," a disclaimer suggests that it is not designed to replace printed books. Users can search, browse, or print the document through the easy-to-use Open Book page image presentation framework.