New theory challenges existence of dark matter
FEB 28, 2011
DOI: 10.1063/PT.5.025089
BBC : A controversial theory that challenges the existence of dark matter has been buoyed by studies of gas-rich galaxies, writes Jason Palmer for the BBC. Instead of invoking dark matter, the modified Newtonian dynamics theory says that the effects of gravity change in places where its pull is very low. The new paper suggests that this theory better predicts the relationship between rotation speeds and masses in gassy galaxies. However, critics maintain that dark-matter theory is a better general description of the universe we see. The study, available online , will be published in Physical Review Letters.
© 2011 American Institute of Physics
