Links to Earth rotation and IERS - Geodesy and other geosciences - Astronomy - Space research - Mathematics - Physics - Books and papers - Computers and informatics - Link lists and search engines.
Links to IERS components and related organizations, as well as to information on Earth rotation in general.
Links to services, institutions, publications, and other themes related to geodesy and other geosciences like mapping, geophysics, geography and meteorology.
Links to general information, data centres, publications and bibliographies, societies, institutions, planetariums, and other link lists in the field of astronomy.
Links to space agencies and institutes, aerospace organizations, and other link lists.
Links to TeX / LaTeX, numerical recipes information, SLATEC, nonlinear dynamics and chaos theory, societies, and other link lists related to mathematics.
Links to general information, general relativity, societies, and other link lists related to physics.
Links to online bookshops, publishers, libraries, information retrieval, journals and abstracts, electronic encyclopedies, publishing, electronic publishing, and other link lists.
Links to general information on the Internet, the World Wide Web, hardware & software, and informatics.
Links to search engines, metalists, systematic lists, and online translators.