Please do not translate the English pages in place – create new ones in your language instead.
Note that the Spanish main page links to some untranslated (i.e. English) pages. (For example, a link titled “Qué es Stellarium?” simply points to Stellarium:About). To translate these, create a new page for each by replacing the English links with Spanish ones, and then follow these links to write your translation.
(I've reverted two pages you edited to their English version. Your translations are not lost, however – you can find them in the history.)
--Mayday 01:24, 24 January 2008 (PST)