The Early Universe
Detectors long used to look at the cosmos are now part of X-ray experiments here on Earth.
Neutron stars have earned their share of superlatives since their discovery in 1967.
The question is more complicated than it seems.
Scientists furthered studies of the Higgs boson, neutrinos, dark matter, dark energy and cosmic inflation and continued the search for undiscovered particles, forces and principles.
Holiday guests will gravitate toward these physics cookies.
What have scientists learned in five years of studying cosmic rays with the Alpha Magnetic Spectrometer experiment?