For those interested in seeking the spark of life on Earth in the Universe, Astroturismo organizes astronomy excursions to interesting pollution-free places with clear skies throughout the year. In early May, a group will be scrutinizing planets and constellations from the salt flats behind Las Grutas (Río Negro). Later this year they will be going to places in Córdoba and San Juan.Information: 54-11-4861-8420; pjuarez@astroturismo.com.ar