EVIDENCE: The Hubble Correlation
The Observation
In 1929, Edwin Hubble published a linear relationship between the distance of a galaxy and the displacement of its spectral lines toward the red end of the spectrum. This is known as the Hubble Constant (\(H_0\)).
THE OBSERVED DATA: \(V = H_0 \cdot D\)
Hubble observed that Redshift (\(z\)) increases proportionally with Distance (\(d\)). The further the light travels through the Lumen, the more its frequency appears to drop.
The Leap of Faith
Hubble (and later Lemaitre) interpreted this "Frequency Drop" as a Doppler Shift. They concluded that galaxies were physically receding from Earth. This required the invention of "Expanding Space" to explain why everything was moving away from us without making us the center of the universe.
The Forensic Discrepancy
The "Hubble Law" relies on the assumption that the vacuum of space is a Perfect Superconductor with zero loss. If the medium is perfectly lossless, then a change in frequency must be caused by motion.