Deja De Torturarte Con Los Recuerdos, Vivieron Lo Que Tuvieron Que Vivir Y Duraron El Tiempo Que Tenían Que Durar.
sci-universe: When he was 17, Neil deGrasse Tyson got a letter from Carl Sagan, the Cornell astronomer and popular science luminary. Tyson was a Bronx High School of Science student applying to colleges, and Sagan invited him for a tour of the lab at
