Black holes and baby universes and other essays

["Filosof\u00eda" "F\u00edsicos" "Science" "Philosophy" "Cosmology" "Cosmolog\u00eda" "Physicists" "Open Library Staff Picks" "Kosmologie" "Ciencia" "Biography" "Biograf\u00eda" "Black holes (astronomy)" "Physicists biography" "Science philosophy" "Hawking s. w. (stephen w.) 1942-2018" "Great britain biography" "Einfu\u0098hrung" "Autobiographie"]