Physics, Astronomy

  • CDS
    Portal of Astronomic information Strassbourg – portal of astronomy, astrophysics and of european observatories. It searches astronomical object (object identifiers), finds image, measurements and bibliography.
  • Optics.org
    Commercial portal of photonics.
  • About.com
    Portal of knowledge of physics. Provided by company About.com.
  • PhysNet
    PhysNet offers country-wise lists of Physics departments and institutes, lists of documents, online literature, preprints, research reports etc., freely available Physics journals, conferences, jobs and other services.