Physics, 06.12.2021 14:00 georgesarkes12
Suppose that you live in a strange universe with a dimensionless Hubble constant
h=0.45. Suddenly, you are sent close to a supermassive black hole at the center of
an unknown galaxy, observed in your (strange) universe to be at redshift z=0.06. You
then come back, quite likely much younger than your fellows on planet Earth. How far
did you travel, in light years ?
Answers: 2
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Suppose that you live in a strange universe with a dimensionless Hubble constant
h=0.45. Suddenly,...
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