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Earth Might Have Hairy Dark Matter

The solar system might be a lot hairier than we thought. A new study publishing this week in the Astrophysical Journal by Gary Prézeau of NASA’s Jet Propulsion Laboratory, proposes the existence of long filaments of dark matter, or “hairs.” Dark matter is an invisible, mysterious substance that makes up about 27 percent of all […]

Dark Matter Dominates In Nearby Dwarf Galaxy

Dark matter is called “dark” for a good reason. Although they outnumber particles of regular matter by more than a factor of 10, particles of dark matter are elusive. Their existence is inferred by their gravitational influence in galaxies, but no one has ever directly observed signals from dark matter. Now, by measuring the mass […]

This New Ultra-sensitive Instrument Will Track Down Dark Matter

There is five times more dark matter in the universe than plain old “normal” matter— the atoms and molecules that make up the familiar world. Yet, it is still unknown what this dominant dark component actually is. An international collaboration of scientists has now inaugurated the new XENON1T instrument designed to search for dark matter […]

Stealth Dark Matter May Explain Universe’s Missing Mass

Particle physicists have combined theoretical and computational physics techniques and used Lawrence Livermore National Laboratory’s massively parallel 2-petaflop Vulcan supercomputer to devise a new model of dark matter. It identifies it as naturally “stealthy” (i.e. like its namesake aircraft, difficult to detect) today, but would have been easy to see via interactions with ordinary matter […]