Astronomy in Johannesburg
http://www.angelfire.com/de/evynThe Pretoria Centre of the Astronomical Society of Southern Africa.
http://www.pretoria-astronomy.co.zaAstronomy education for the youth, public and tourists in South Africa.
http://www.astronomyforafrica.comAn interest group in Benoni with monthly meeting and outings.
http://www.eastrandastronomy.co.zaThis website provides an opportunity for persons to hear another side of the story.
http://www.facethefacts.co.zaMeasurements in variations in the density of gravitation, using controlled laboratory set ups.
http://www.gravitationalwaves.netHartebeesthoek Radio Astronomy Observatory
http://www.hartrao.ac.za/The Planetarium at the Witwatersrand has been open to the public since 12 October 1960.
http://www.planetarium.co.zaDe werking en het ontstaan van het universum, van relativiteit tot het ontstaan van het leven.
http://gallery.uunet.be/Lode.StevensSouthern African Ocean Tide data and images.
http://www.satides.co.za