Stanford study suggests dark matter is lighter and more elusive than previously thought

Although it makes up about 85 percent of all matter in the universe, dark matter is frustratingly hard to pin down. In order to figure out what it is, much of the search is about ruling out what dark matter isn’t, and now physicists at Stanford and the SLAC National Accelerator Laboratory have narrowed it down further. Using observations of galaxies orbiting the Milky Way, the team found that dark matter is likely lighter than previously thought – and interacts even less with normal matter.

Tau.Neutrino said:

Stanford study suggests dark matter is lighter and more elusive than previously thought

Although it makes up about 85 percent of all matter in the universe, dark matter is frustratingly hard to pin down. In order to figure out what it is, much of the search is about ruling out what dark matter isn’t, and now physicists at Stanford and the SLAC National Accelerator Laboratory have narrowed it down further. Using observations of galaxies orbiting the Milky Way, the team found that dark matter is likely lighter than previously thought – and interacts even less with normal matter.

read that, it’s interesting, spooky.

making me conjure other simultaneous universes, and even God, dark matter does.

transition said:

Tau.Neutrino said:

Stanford study suggests dark matter is lighter and more elusive than previously thought

Although it makes up about 85 percent of all matter in the universe, dark matter is frustratingly hard to pin down. In order to figure out what it is, much of the search is about ruling out what dark matter isn’t, and now physicists at Stanford and the SLAC National Accelerator Laboratory have narrowed it down further. Using observations of galaxies orbiting the Milky Way, the team found that dark matter is likely lighter than previously thought – and interacts even less with normal matter.

read that, it’s interesting, spooky.

making me conjure other simultaneous universes, and even God, dark matter does.

might be a good question for moll, am wondering what would happen to thermodynamics in this universe if there were less or more, or no dark matter. The second law, entropy, as gives us time, for example.

transition said:

Tau.Neutrino said:

Stanford study suggests dark matter is lighter and more elusive than previously thought

Although it makes up about 85 percent of all matter in the universe, dark matter is frustratingly hard to pin down. In order to figure out what it is, much of the search is about ruling out what dark matter isn’t, and now physicists at Stanford and the SLAC National Accelerator Laboratory have narrowed it down further. Using observations of galaxies orbiting the Milky Way, the team found that dark matter is likely lighter than previously thought – and interacts even less with normal matter.

read that, it’s interesting, spooky.

making me conjure other simultaneous universes, and even God, dark matter does.

“They found that for everything to fit together neatly, dark matter must have a lighter mass and must be “warmer” (i.e. moves a bit faster) than previously assumed.”

Yeah, i’ve heard that before, at least half a dozen times.

Trouble is, lighter mass dark matter was already ruled out by the Large Hadron Collider a decade ago.

But then, more recently it’s been ruled out for heavier mass dark matter as well. The interaction between dark matter and ordinary matter has to be below the lowest line on this graph.

By way of comparison, the msss of the Higgs is 125 GeV. The mass of the Top Quark is 173 GeV. The mass of a proton is 0.94 GeV. The mass of the Charm Quark is 1.27 GeV. The mass of the Botton Quark is 4 GeV.