D e B T i s S l a V 3 r Y S T u P i D
DuBi0uSlY EnDoWs YoU WiTh
Cosmos.A.Spacetime.Odyssey.S01E08.1080p.BluRay.x264-DeBTViD
DVD.DATE.. 10 June 2014
RLS.DATE.. today
GENRE..... Documentary
LANG...... English
ViDEO..... 1920x1080
BiTRATE... 9345kb/s
FPS....... 23.976fps
ASPECT.... 16:9
AUDiO..... 1509kb/s 5.1 DTS
DURATiON.. 43m11s
SOURCE.... R1 BD
SIZE...... 71x50mb
SUBS...... English
IMDB: http://www.imdb.com/title/tt2395695/
RELEASE NOTES
This episode provides an overview of the
composition of stars, and their fate in billions
of years. Tyson describes how early man would
identify stars via the use of constellations that
tied in with various myths and beliefs, such as
the Pleiades. 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. 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. 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.
Tyson then explains the lifecycle of stars, being
borne out from interstellar clouds. 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. As 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 explains how
larger stars may form even more collapsed forms of
matter, creating novas and supernovas depending on
their size and leading to pulsars. Massive stars
can collapse into black holes. Tyson then
describes that stars can only be so large, using
the example of Eta Carinae which is considered an
unstable solar mass that could become a hypernova
in the relatively near future. Tyson ends
describing how all matter on Earth is the same
stuff that stars are made of, and that light and
energy from the stars is what drives life on
Earth.s
QUOTES
"There is a lot more to life than just struggling
to make money."
-Ann Richards
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