by nick c » Wed Apr 22, 2020 12:52 am
For reference here is the link to Scott's article:
https://electric-cosmos.org/Olber.pdf
stargazer1985 wrote:But if redshift index is not a reliable indicator of distance, how exactly do we know how far away these stars really are since we cannot travel thence to confirm our measurements?
Cosmic redshift would be used as a measure of the distance to objects on the galactic scale, for example: galaxies outside of our Local Group, quasars, Bl Lac objects, etc, (Arp presented a mountain of evidence that disputes that.)
But a star 600 light years away would be in our own galaxy and redshift would not be used to measure its distance from Earth. Six hundred light years is in our galactic neighborhood. Nearby stars are measured by the
Stellar Parallax method. This method's accuracy decreases with distance but should be reasonably accurate for a star at a distance of 600 ly.
For reference here is the link to Scott's article:
https://electric-cosmos.org/Olber.pdf
[quote="stargazer1985"]But if redshift index is not a reliable indicator of distance, how exactly do we know how far away these stars really are since we cannot travel thence to confirm our measurements?[/quote]Cosmic redshift would be used as a measure of the distance to objects on the galactic scale, for example: galaxies outside of our Local Group, quasars, Bl Lac objects, etc, (Arp presented a mountain of evidence that disputes that.)
But a star 600 light years away would be in our own galaxy and redshift would not be used to measure its distance from Earth. Six hundred light years is in our galactic neighborhood. Nearby stars are measured by the [url=https://www2.jpl.nasa.gov/teachers/attachments/parallax.html]Stellar Parallax method[/url]. This method's accuracy decreases with distance but should be reasonably accurate for a star at a distance of 600 ly.