News of the WeekCosmology

Superheavy Particles From the Big Bang?

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Science  19 Feb 1999:
Vol. 283, Issue 5405, pp. 1095-1096
DOI: 10.1126/science.283.5405.1095a

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CHICAGO-- At a gathering of the world's leading cosmologists here, theorists described a new candidate for the role of dark matter--the universe's unseen mass. Called a Wimpzilla, the hypothetical particle would be millions to trillions of times more massive than a Wimp, a Weakly Interacting Massive Particle. Wimps, hypothetical slow-moving, exotic relics of the big bang, have been a leading dark matter contender until now.