Scientists on the ATLAS experiment explored the polarization of W bosons to test the Higgs mechanism and gain a deeper understanding of the first moments after the Big Bang.
In its first five years gazing at the gamma-ray sky, the Fermi Gamma-ray Space Telescope provided new insights into cosmic puzzles ranging from dark matter to blazars—and added a few new puzzles to the list.
For a little over a month this summer, a huge electromagnet slowly journeyed from New York to Illinois, offering great photo opportunities along the way.