A puzzling mismatch is forcing astronomers to re-think how well they understand the expansion of the universe.
What can our cosmic neighbors tell us about dark matter and the early universe?
Physicists exchanged cognac in Copenhagen at the conclusion of a bet about supersymmetry and the LHC.
It’s the cornerstone of cosmology, but what is it all about?
A doctoral student and his adviser designed a tabletop particle detector they hope to make accessible to budding young engineering physicists.
Fermilab’s house photographer of almost 30 years, Reidar Hahn, shares four of his most iconic shots.
See cosmologist Risa Wechsler's answers to readers' questions about dark matter and dark energy.
How do scientists know what percentages of the universe are made up of dark matter and dark energy?