3 ms·
ESO offers guided tours of their Paranal and La Silla observatories. http://www.eso.org/public/about-eso/visitors/ http://www.eso.org/public/about-eso/visitors
by welterde 12y ago
ESO offers guided tours of their Paranal and La Silla observatories.
http://www.eso.org/public/about-eso/visitors/ http://www.eso.org/public/about-eso/visitors/