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Astronomy and Cosmology
Cosmology
Have we measured the change in the red shift over time?
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[QUOTE="Chronos, post: 6002061, member: 10970"] Keep in mind the rate of expansion is absolutely microscopic compared to the size of the universe. The Hubble constant is about 70 km/sec/MEGAparsec. That translates into about 7x10[SUP]-9[/SUP]% per year. We cannot measure redshift with such phenomenal accuracy - even at vast distances over many, many years. Scientists have come up with a very clever effortt using gravitational lensing as described here; [URL]https://arxiv.org/abs/1703.05142[/URL], Redshift drift of gravitational lensing [/QUOTE]
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Forums
Astronomy and Cosmology
Cosmology
Have we measured the change in the red shift over time?
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