Join acclaimed astrophysicist Neil deGrasse Tyson on a journey through space and time in an effort to discover humanity’s place within the universe.
Solar mass that could become a hypernova in the relatively near future. Watch Cosmos: A Spacetime Odyssey Free Online. Tyson then describes that stars can only be so large, using the example of Eta Carinae which is considered an unstable Massive stars can collapse into black holes. Tyson explains how larger stars may formĮven more collapsed forms of matter, creating novas and supernovas depending on their size and leading to pulsars. He explains how stars like the Sun keep their size due to the conflicting forces of gravity that pulls the gases in, and the expansion from escaping gases from the fusion reactions at its core.Īs the Sun ages, it will grow hotter and brighter to the point where the balance between these reactions will fail, causing the Sun to first expand into a red giant, and then collapse into a white dwarf, the collapse limited by the atomic forces. Tyson then explains the lifecycle of stars, being borne out from interstellar clouds. Later, this team included Cecilia Payne, who would develop a good friendship with Cannon Payne's thesis based on her work with Cannon was able to determine the composition and temperature of the stars, collaborating with Cannon's classification system. This team included Annie Jump Cannon, who developed the stellar classification system, and Henrietta Swan Leavitt, who has discovered the means to measure the distance from a star to the earth by its spectra, later used to identify other galaxies in the universe. Tyson describes the work of Edward Charles Pickering to capture the spectra of multiple stars simultaneously, and the work of the Harvard Computers or "Pickering's Harem", a team of women researchers under Pickering's mentorship, to catalog the spectra. Ann Druyan Accepts Peabody Award for COSMOS A SpaceTime Odyssey.jpg 683 × 963 152 KB. Tyson describes how early human would identify stars via the use of constellations that tied in with various myths and beliefs, Media in category 'Cosmos: A Spacetime Odyssey' The following 10 files are in this category, out of 10 total. This episode provides an overview of the composition of stars, and their fate in billions of years.