MOND – Quanta Magazine

An Alternative to Dark Matter Passes Critical Test

Charlie Wood — Tue, 28 Jul 2020 14:50:00 +0000

For decades, a band of rebel theorists has waged war with one of cosmology’s core concepts — the idea that an invisible, intangible form of matter forms the universe’s primary structure. This dark matter, which seems to outweigh the stuff we’re made of 5-to-1, accounts for a host of observations: the tight cohesion of galaxies and packs of galaxies, the way light from faraway galaxies will bend on...

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Troubled Times for Alternatives to Einstein’s Theory of Gravity

Katia Moskvitch — Mon, 30 Apr 2018 14:00:38 +0000

Miguel Zumalacárregui knows what it feels like when theories die. In September 2017, he was at the Institute for Theoretical Physics in Saclay, near Paris, to speak at a meeting about dark energy and modified gravity. The official news had not yet broken about an epochal astronomical measurement — the detection, by gravitational wave detectors as well as many other telescopes...

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How Superfluid Dark Matter Mimics an Old Idea About Gravity

Jennifer Ouellette — Tue, 13 Jun 2017 19:23:17 +0000

Two physicists have been developing a theory of superfluid dark matter, an idea that I explore at length in the article “Dark Matter Recipe Calls for One Part Superfluid.” Perhaps most intriguing is that the new theory reproduces in many ways the predictions of a model called Modified Newtonian Dynamics, or MOND, which was first proposed in 1983. MOND abandons dark matter particles entirely.

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The Case Against Dark Matter

Natalie Wolchover — Tue, 29 Nov 2016 17:43:05 +0000

For 80 years, scientists have puzzled over the way galaxies and other cosmic structures appear to gravitate toward something they cannot see. This hypothetical “dark matter” seems to outweigh all visible matter by a startling ratio of five to one, suggesting that we barely know our own universe. Thousands of physicists are doggedly searching for these invisible particles. But the dark matter...

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