Quantum, Relativity & Forces Explained | Pixelated Physics
2 articles
Is Cosmological Redshift a Doppler Shift? Stret...
Light from distant galaxies arrives stretched to longer, redder wavelengths. Is that a Doppler shift from galaxies racing away, or space itself stretching the light? Here is the formula that...
Is Cosmological Redshift a Doppler Shift? Stret...
Light from distant galaxies arrives stretched to longer, redder wavelengths. Is that a Doppler shift from galaxies racing away, or space itself stretching the light? Here is the formula that...
How Big Is the Observable Universe if It Is 13....
Light has only had about 13.8 billion years to reach us, so why do cosmologists put the edge of the observable universe about 46 billion light-years away? The answer is...
How Big Is the Observable Universe if It Is 13....
Light has only had about 13.8 billion years to reach us, so why do cosmologists put the edge of the observable universe about 46 billion light-years away? The answer is...