1) The USSR initially led the space race by launching the first satellite, animal, human (man and woman) into space, but the US caught up.
2) The phenomenon of "desaparecidos" (forced disappearances of people) was linked to the military dictatorship in Argentina in the 1970s-80s.
3) On July 20, 1969, Neil Armstrong and Buzz Aldrin became the first humans to walk on the moon, marking an important achievement for humanity.