News FocusAstrophysics

Heretical Idea Faces Its Sternest Test

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Science  28 Jan 2000:
Vol. 287, Issue 5453, pp. 572-573
DOI: 10.1126/science.287.5453.572

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Until recent data cast doubt on it, Modified Newtonian Dynamics (MOND), an equation that adds a fudge factor to Newton's law of gravity, had enjoyed a good run for predicting the motions of galactic clouds. Upcoming studies of the big bang's afterglow should make or break the concept that many cosmologists love to hate.