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A taste of particle physics

    If one wanted to follow the recipe for the universe, it would call for about 14 parts dark energy, 5 parts dark matter and 1 part visible matter. In a perpetually expanding cosmic landscape that reaches far beyond what even the most powerful telescopes can see, this might be hard to visualize. Physicists Katy Grimm and Katharine Leney found a solution for this: Use this recipe for the cosmos to bake a proportionally correct dark matter cake.

    Particle physics is doing just fine

      From Slate, Jan. 31, 2019: In science, lack of discovery can be just as instructive as discovery. Finding out that there are no particles where we had hoped tells us about the distance between human imagination and the real world. It can operate as a motivation to expand our vision of what the real world is like at scales that are totally unintuitive.

      Designing magnets for the world’s largest particle collider

        From IEEE Spectrum, Jan. 30, 2019: If realized, the Future Circular Collider will produce magnetic fields nearly twice as strong as the LHC and accelerate particles to unprecedented energies of 100 teraelectron volts, compared to the Large Hadron Collider’s energies of 13 TeV. Whereas the magnetic system at the LHC can achieve strengths of 8.3 teslas, the FCC system would be able to achieve 16 T.

        Signing off from southern sky post

          From APS’s Physics, Jan. 29, 2019: On Jan. 9, a handful of researchers with the Dark Energy Survey — one of the most ambitious attempts to probe the dynamics of the universe’s expansion — headed to the control room of Chile’s Blanco Telescope. For one last time, they opened the white telescope’s dome. From their perch overlooking the red Andean Mountains, they set up for a night of observing the southern sky.