A Brief History of Time
Random House Publishing Group, 1998 M09 1 - 240 páginas
#1 NEW YORK TIMES BESTSELLER
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... recollapse . In this case the separation , shown in Fig . 3.4 , also starts at zero and increases forever . However , the speed at which the galaxies are moving apart gets smaller and smaller , although it never quite reaches zero . A ...
... recollapse . We can determine the present rate of expansion by measuring the velocities at which other galaxies are moving away from us , using the Doppler effect . This can be done very accurately . However , the dis- tances to the ...
... recollapse , and so will not recollapse for a very long time . By then all the stars will have burned out and the protons and neutrons in them will probably have decayed into light particles and radiation . The universe would be in a ...
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