A Brief History of TimeRandom House Publishing Group, 1998 M09 1 - 240 páginas #1 NEW YORK TIMES BESTSELLER |
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... contain one proton and one neutron . The deuterium nuclei would then have combined with more protons and neutrons to make helium nuclei , which contain two protons and two neutrons , and also small amounts of a couple of heavier ...
... contains about 2 percent of these heavier elements , because it is a second- or third - generation star , formed some five thousand million years ago out of a cloud of rotating gas containing the debris of earlier supernovas . Most of ...
... contain a number of regions that are smooth and uniform and are suitable for the evolution of intelligent life . On the other hand , if the initial state of the universe had to be chosen extremely carefully to lead to something like ...
Otras ediciones - Ver todas
A Brief History of Time: From the Big Bang to Black Holes Stephen Hawking,Carl Sagan Vista de fragmentos - 1990 |
Términos y frases comunes
Referencias a este libro
Qualitative Data Analysis: A User-friendly Guide for Social Scientists Ian Dey Sin vista previa disponible - 1993 |
Postmodern Public Administration: Toward Discourse Charles J. Fox,Hugh T. Miller Vista de fragmentos - 1995 |