TOPSHOT - Astronomers prepare telescopes ahead of a solar eclipse at the La Silla European Southern Observatory (ESO), in La Higuera, Coquimbo Region, Chile, on July 02, 2019. - Day will briefly turn to night Tuesday over large parts of Chile and Argentina as a total eclipse of the Sun plunges a vast swath of the southern Pacific and the cone of South America into darkness. (Photo by Martin BERNETTI / AFP)