Are We Finally Closing in on Dark Matter?

Are We Finally Closing in on Dark Matter?

IF YOU thought the Higgs boson was elusive, consider the case of dark matter. The Higgs—the particle that gives other subatomic species mass—was predicted in 1964 but actually nabbed only last year. That 48-year hunt, though, was a breeze compared with the one for dark matter. Physicists have known the stuff must exist since 1933, when Fritz Zwicky, a Swiss astro-physicist, coined the term to describe a substance which cannot be seen but without which visible galaxies would fly apart as they rotate.

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