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Topping off a telescope with new tools to explore dark energy

    From Berkeley Lab, Dec. 4, 2018: Key components of Berkeley Lab’s Dark Energy Spectroscopic Instrument are installed after months of planning, prep work. A team at Fermilab built the corrector, hexapod, and other top-end support structures. The structures are designed to align the lenses with an accuracy of tens of microns (millionths of a meter) – similar to the width of the thinnest human hair.

    Physics books of 2018

    Symmetry writer Mike Perricone presents his annual compilation of new popular science books related to particle physics and astrophysics. The array that Symmetry readers might have encountered in 2018 ranges from the philosophical to the whimsical.

    A controversial sighting of dark matter is looking even shakier

      From Science News, Dec. 5, 2018: The COSINE-100 searched for particles using the same type of detector as another experiment, whose researchers said they had strong evidence that dark matter was interacting in their detector. COSINE-100 found no evidence of the evasive subatomic particles. Fermilab scientist Dan Hooper comments on COSINE-100’s findings.

      LHC noir

      A proton describes its final moments in the Large Hadron Collider. During its second run, between 2015 and 2018, the Large Hadron Collider at CERN collided about 16 million billion particle pairs. This 3-minute animation is the story of one of them.

      View of Large Hadron Collider

      LHC ends second season of data-taking

      During the last four years, LHC scientists have filled in gaps in our knowledge and tested the boundaries of the Standard Model. Since the start of Run II in March 2015, they’ve recorded an incredible amount of data —five times more than the LHC produced in Run I. The accelerator produced approximately 16 million billion proton-proton collisions — about one collision for every ant currently living on Earth.