Astronomy
Astronomy Department: Universidad de Concepcion - http://www.astro-udec.cl/
Provides information in both English and Spanish about the astronomy department for both undergraduate and postgraduate level.
AstronomyLinks - http://astronomylinks.com/
Online directory offering more than 1000 listings related to astronomy and space. Includes news, glossary and submission services.
OpticsPlanet - http://www.opticsplanet.net/
OpticsPlanet carries a wide selection of binoculars, telescopes, radar guns, rangefinders, rifle scopes, red dot sights and eyewear.