Here are three more, very useful links to sites with much material of interest to Astronomy On-Line groups. The first two are to the sister organisations of ESO and the third is to an educational site in the USA.
The European Space Agency (ESA) has its Headquarters in Paris. It is the prime organisation in Europe for Space Research. From this site you will be able to obtain much intersting information about recent results, obtained with the ESA satellites, for instance ISO, Hipparcos, Ulysses, etc.
ESO collaborates with ESA in many different ways, most visibly via the Space Telescope/European Coordinating Facility, a group of specialists that help European scientists to use the Hubble Space telescope in the most efficient way. It is located at the ESO Headquarters in Garching, Germany.
The European Laboratory for Particle Physics (CERN) is located in Geneva (Switzerland) and straddles the border with France. It runs some of the largest particle accelerators in the world and studies the microcosmos. As you know, it is possible to reproduce conditions in the very young Universe, fractions of a second after the Big Bang with these machines. The results are therefore also of direct interest to cosmologists and astrophysicists. CERN is also the birthplace of the World-Wide-Web.
Did you know that the ESO 3.6-metre telescope, now on La Silla, was designed and constructed in a colaboration between ESO and CERN in the early 1970's?
From the Homepage of this famous educational facility: The Wright Center is dedicated to the creation and sharing of novel instructional techniques and interdisciplinary resources for pre-college teachers. Through its fellowships, workshops, seminars, and a variety of public-outreach activities, the Center provides leadership in the training and retraining of science teachers to use innovative methods to stimulate young minds.