•  South African Astronomical Observatory
•  Hartbeeshoek Radio Astronomy Observatory 
•  Centre for High Performance Computing
•  The Council for Scientific and Industrial Research 
•  South African Institute of Physics
•  National Research Foundation (NRF)
•  The National Aeronautics and Space Administration (NASA)
•  The Large Hadron Collider (LHC) 
•  PhysicsJobs.com
•  Australia Telescope Outreach and Education
•  What is a maser (Gravity Probe)
•  Intro to turbulence in fluids and plasmas 
•  Atmospheric Cherenkov Telescopes (H.E.S.S. Project)
•  Gamma-ray telescope: Fermi
•  The SAO/Nasa Astrophysics Data System