百年紀念公園

Parque Centenario is an extensive public park in the Caballito district of Buenos Aires, Argentina.

Asociación Argentina Amigos de la Astronomía (AAAA, A.A.A.A. or asaramas; the Argentinian Association of the Friends of Astronomy; obs code: 834) is an amateur astronomy civil association based on Buenos Aires, Argentina, with the aim of spreading astronomy. It was founded on January 4, 1929 and its field courses are held on related subjects, research in collaboration with professional bodies and printed publications or multimedia, and recreational activities for the general public.