Gravity Can Exist Without Mass, Potentially Eliminating the Need for Dark Matter
In a recent study published in the Monthly Notices of the Royal Astronomical Society, Dr. Richard Lieu from The University of Alabama in Huntsville challenges the conventional belief in dark matter by proposing an alternative theory where gravity can exist without mass.
Dark matter, a mysterious form of matter that was first suggested nearly a century ago to explain gravitational effects that cannot be accounted for by general relativity, may not be necessary according to Lieu’s research. By introducing the concept of concentric sets of shell-like topological defects in cosmic structures, Lieu argues that the excess gravity needed to bind galaxies together could be attributed to these structures rather than invisible mass.
The study raises questions about the nature of these topological defects and how they contribute to the formation and evolution of galaxies and clusters. While the existence of massless shells as proposed by Lieu challenges the traditional understanding of gravity, further research is needed to confirm or refute this hypothesis.
Lieu’s work opens up new possibilities for understanding the fundamental forces that govern the universe, offering a fresh perspective on the nature of gravity and mass in cosmic structures.
For more information on the study, you can refer to the publication by Richard Lieu in the Monthly Notices of the Royal Astronomical Society (2024).