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.
Through the “Snowmass” process, particle physicists discussed the field’s biggest unanswered questions and thoroughly analyzed the tools needed to answer them.
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.
