In an ongoing quest to guess the secret behind the Universe's excess in gravity, two researchers from Dartmouth College in the US have proposed a chilling union between massless particles soon after the Big Bang.
For the better part of a century it's been frustratingly clear that estimates of the Universe's visible mass have failed to account for the way galaxies rotate, pointing to slow-moving clumps of matter we can't see. This stuff has been dubbed ' dark matter'.
Even as researchers whittle away at the list of properties describing this cold and silent corner of physics, its identity and origins remain elusive.
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