Cosmology challenges dark matter

A University of Ottawa model questions the need for dark matter and dark energy, proposing an older universe and changing constants.

Cosmology faces bold challenge to dark matter paradigm

A study from the University of Ottawa explores a cosmology without dark matter or dark energy. The authors propose a CCC plus tired light framework that allows fundamental constants to vary and light to lose energy over long journeys. They argue these ideas can fit key observations, including how galaxies are distributed and how light shifts across space, while suggesting the cosmos may be older than the standard estimate.

Gupta and colleagues say their theory must face the same strict tests as any rival cosmology. They emphasize independent checks using galaxy rotation curves, gravitational lensing maps, the cosmic microwave background, and distant supernova data to see if the CCC plus TL picture holds. The broader scientific community remains cautious, noting that dark matter has explained many phenomena for decades and that extraordinary claims require strong evidence.

The piece highlights a clash between bold theory and long standing data. If the CCC TL model withstands scrutiny, it could require a rethink of how we measure time and distance in the universe. If it falters, the field will push for careful replication and clear communication to avoid hype. Either outcome tests the core habit of science: let data decide rather than admit a paradigm shift on faith.

Highlights

The truth will emerge from measurements, not momentum of opinion.