The activities have been reviewed by a multi-national group of Spanish-speaking educators and astronomers and updated and appended for use in the northern or southern hemisphere. Perfect for the bi-lingual or Spanish classroom or youth group, the 3 hole-punched, loose-leaf pages feature 490 pages on a broad range of astronomical topics. Click here to view the Table of Contents for El Universo a sus pies. This product is a translation of the "greatest hits" from the Universe at Your Fingertips and More Universe at Your Fingertips.