Dark-Matter-Free Model Reproduces Rotation of All 175 SPARC Galaxies

Takeaway: the new model claims to explain galaxy rotation through evolving physical constants instead of invisible mass.

Does it survive the Bullet Cluster?

The Bullet Cluster, where two galaxy clusters collided, has long favored dark matter because the extra gravity tracks the galaxies rather than the hot, X-ray-emitting gas. Under CCC+TL, the team reports, the predicted gravitational effect also follows the galaxies. They describe the result as an early proof of concept that needs further study — an appropriately cautious label for one of cosmology's most scrutinized objects.

"Observations attributed to dark matter and dark energy likely originate from covarying coupling constants," says Gupta, whose companion paper on the origin of dark matter and dark energy develops the argument.

Takeaway: one historically hostile data point now fits the model, but the analysis remains preliminary.

Why an older universe solves the 'impossible galaxy' problem

Astronomers keep finding large, mature galaxies early in cosmic history, which strains ΛCDM because galaxies need time to grow. How much time depends on how a model interprets redshift — the shift of a galaxy's light toward longer, redder wavelengths.

The numbers diverge sharply. For observations from cosmic dawn that ΛCDM dates to a universe about 300 million years old, CCC+TL assigns an age of about 4.6 billion years at the same measured redshift. In calculations reported in Galaxies 13, 115, early galaxies come out roughly 12 times larger in size and mass than the standard model predicts.

"Impossible early galaxies become predictable galaxies," Gupta explains. "We predict that galaxies exist well beyond the distances the James Webb Space Telescope has reached."

The James Webb Space Telescope's GLIMPSE program plans to search for galaxies at redshifts above 50 — a regime where the standard model may allow too little time for massive galaxies to form, but CCC+TL imposes no such constraint. The observation could become a direct test of the prediction.

Takeaway: the model buys early galaxies billions of extra years, turning a ΛCDM embarrassment into a forecast.

How far do the checks extend?

• The framework's predictions for hydrogen, helium and other light elements formed shortly after the Big Bang match the standard model's.
• It agrees with cosmic-chronometer measurements, which use galaxy ages to estimate how fast the universe has expanded over time.
• A separate study of time dilation — the stretching of a supernova's observed timescale — also supports CCC+TL, though that paper remains under review.
• The team's analysis extends to the cosmic microwave background, the relic radiation from the early universe.

"Most emerging models explain only a limited set of observations," Gupta says. "A new model must not conflict with the pillars of cosmology and astrophysics, and our findings meet that challenge, including the yet-to-be-published Cosmic Microwave Background challenge."

The reference paper, "A Big Bang Nucleosynthesis Consistency Test of the CCC+TL Cosmology" by Rajendra P. Gupta and Nikolaos Samaras, appeared 25 June 2026 in Universe (DOI: 10.3390/universe12070193).

Peer scrutiny of an unconventional framework will be severe, and several results await publication or replication. Still, as Gupta puts it: "The success should encourage astronomers to take the new model seriously. It is challenging to understand and apply, but we believe it extends the physics of the Universe beyond ΛCDM limits."

For now, the burden of proof sits with the model — and the next Webb observations.