Fritz Zwicky’s Largely Ignored “Tired Light” Proposal of 1929 May Actually Be Right After All

Posted by Guy Pirro 09/18/2024 12:57AM

Fritz Zwicky was not a shy person – He called them like he saw them. And he was very outspoken about his views. He, for example, was the first astrophysicist to come up with the concept of Dark Matter in 1933. He also had very strong views about redshift. Zwicky's contention was that the redshift observed from Earth was not because the galaxies were moving faster and faster away from us, but because the light photons were being shifted toward the red side of the spectrum as they lost energy while traveling long distances through space. Zwicky proposed that the longer the light traveled, the more energy it lost, leading to an illusion that galaxies that were more distant from Earth were also moving faster. His “Tired Light Theory” was largely ignored and neglected at the time (and even today), as astronomers adopted the more popular Big Bang Theory as the consensus model of the Universe. Now, new peer-reviewed research from Kansas State University shows that Fritz Zwicky may actually have been right, putting the whole narrative supporting the Big Bang Theory into question. (Image Credit: Caltech Archives https://digital.archives.caltech.edu/collections/Images/10.12-64/ )

Fritz Zwicky’s Largely Ignored “Tired Light” Proposal of 1929 May Actually Be Right After All

A Kansas State University engineer recently published results from an observational study in support of a century-old theory that directly challenges the validity of the Big Bang theory.

Lior Shamir, associate professor of computer science, used imaging from a trio of telescopes and more than 30,000 galaxies to measure the redshift of galaxies based on their distance from Earth. Redshift is the change in the frequency of light waves that a galaxy emits, which astronomers use to gauge a galaxy's speed.

Shamir's findings lend support to the century-old "Tired Light" theory instead of the Big Bang.

"In the 1920s, Edwin Hubble and George Lemaitre discovered that the more distant the galaxy is, the faster it moves away from Earth," Shamir said. "That discovery led to the Big Bang theory, suggesting that the universe started to expand around 13.8 billion years ago. At around the same time, preeminent astronomer Fritz Zwicky proposed that galaxies that were more distant from Earth did not really move faster."

Zwicky's contention was that the redshift observed from Earth is not because the galaxies move but because the light photons lose their energy as they travel through space. The longer the light travels, the more energy it loses, leading to an illusion that galaxies that are more distant from Earth also move faster.

"The Tired Light theory was largely neglected, as astronomers adopted the Big Bang theory as the consensus model of the universe," Shamir said. "But the confidence of some astronomers in the Big Bang theory started to weaken when the powerful James Webb Space Telescope saw first light. The JWST provided deep images of the very early universe, but instead of showing an infant early universe as astronomers expected, it showed large and mature galaxies. If the Big Bang happened as scientists initially believed, these galaxies are older than the universe itself."

While new imaging casts doubt on the Big Bang, Shamir's study used the constant rotational velocity of the Earth around the center of the Milky Way to examine the redshift of galaxies that move in different velocities relative to Earth and to test how the change in the redshift responds to the change in velocity.

"The results showed that galaxies that rotate in the opposite direction relative to the Milky Way have lower redshift compared to galaxies that rotate in the same direction relative to the Milky Way," Shamir said. "That difference reflects the motion of the Earth as it rotates with the Milky Way. But the results also showed that the difference in the redshift increased when the galaxies were more distant from Earth.

"Because the rotational velocity of the Earth relative to the galaxies is constant, the reason for the difference can be the distance of the galaxies from Earth. That shows that the redshift of galaxies changes with the distance, which is what Zwicky predicted in his Tired Light theory."

Shamir's research was recently published in Particles, a quarterly international, open-access, peer-reviewed journal covering all aspects of nuclear physics, particle physics, and astrophysics science.