MOND: A Radical Alternative Theory of Gravity
The MOND theory, first proposed in 1983 by Israeli physicist Mordehai Milgrom, offers a different explanation. MOND suggests modifying Newton’s second law to account for discrepancies observed in galaxy rotation curves without invoking dark matter. These modifications are relevant in regions of tiny accelerations, such as those experienced at the universe’s periphery, where JWST is now observing.
In 1998, McGaugh co-authored a seminal paper proposing that galaxy formation happened more rapidly and did not rely on dark matter. Instead, he and his co-authors, including Federico Lelli, Jay Franck, and James Schombert, theorized that galactic material was quickly collected, expanded with the universe, and then collapsed under gravity. This theory contends that galaxies came together early, forming large, luminous structures without the need for dark matter. |
