New Insights from a Dark-Matter-Free Galaxy Revives Controversial Gravity Theory (Weekend Feature) dailygalaxy.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailygalaxy.com Daily Mail and Mail on Sunday newspapers.
“The discrepancy between what was expected and what has been observed has grown over the years, and we’re straining harder and harder to fill the gap.” -Jeremiah P. Ostriker
When it comes to the Universe, and the structure in it, from galaxies to groups to clusters to the grand cosmic web on the largest scales, you simply can't account for it all without dark matter.
In the early 1980’s Israeli physicist Mordehai Milgrom from Weizmann Institute proposed a new theory, “the smoking gun” –a new theory of the universe’s structure that offers the most plausible alternative yet to dark matter– that defied the laws of gravity suggesting that galaxies are governed by modified dynamics rather than obeying the laws of Newton and of general relativity. “This theory became known as MOND for modified Newtonian Dynamics, Milgromian Dynamics, or “modified gravity”–a viable explanation for a cosmological dilemma: that galaxies appear to defy the long-accepted rules of gravity traced to Sir Isaac Newton in the late 1600’s. In short, the mathematics of gravity may hint at weirder phenomena than many thought.