Redshift Articles

Tag Archive for: redshift

expandinguniverse

Explore Coordinate Dependent Statements in an Expanding Universe

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In this Insight, we will discuss the general Robertson-Walker (RW) universe, in which a set of co-moving observers with proper time ##t## observe the universe…
universeexpansion

At What Velocity Does the Universe Expand and Can It Be Faster than Light?

Neither of these questions makes sense in the form in which it was posed. To see why, let's start by thinking about how we know the universe is expanding.The…
quasarredshift

Evidence that Galaxy and Quasar Redshifts Are Cosmological

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How do we know that the redshifts of galaxies and quasars are cosmological and not "intrinsic"? Evidence for the cosmological interpretation Historical…
redshiftblackholes

Time Dilation & Redshift of Schwarzschild Black Holes

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Time dilation near a Schwarzschild black hole The following is an overview of the time-dilation and gravitational-redshift effects of a static (Schwarzschild)…