Episode summary Deeper, Deeper, Deeper Still

supernova sn 1987a helped prove existence of neutrinos resulted nuclear reactions deep within star.

this episode exhibits nature of cosmos on microscopic , atomic scales, using ship of imagination explore these realms. tyson describes of micro-organisms live within dewdrop, demonstrating parameciums , tardigrades. proceeds discuss how plants use photosynthesis via chloroplasts convert sunlight chemical reactions convert carbon dioxide , water oxygen , energy-rich sugars. tyson discusses nature of molecules , atoms , how relate evolution of species. uses example set forth charles darwin postulating existence of long-tongued morgan s sphinx moth based on nature of comet orchid pollen far within flower. further demonstrates scents flowers used trigger olfactory centers in brain, stimulating mind threats aid in survival of species.

tyson narrates how greek philosophers thales , democritus postulated matter made of combinations of atoms in large number of configurations, , describes how carbon serves basic building block life on earth due unique chemical nature. tyson examines basic structure of atoms, protons, neutrons, , electrons, , nature of nuclear fusion, process found occur within stars. discusses existence of neutrinos created these nuclear processes, , attempts detect such subatomic particles pass through matter, requiring subterranean facilities super-kamiokande used detect neutrinos supernova sn 1987a in large magellanic cloud. these neutrinos detected before light explosion reached us; due ability pass through matter of dying star itself. tyson compares how neutrinos postulated wolfgang pauli account conservation of energy nuclear reactions in same manner darwin s postulate on long-tongued moth. tyson concludes noting neutrinos big bang still exist in universe but, due nature of light, there wall of infinity beyond cannot observe.