A theoretical species of particle might answer nearly every question about our cosmos—if scientists can find it.
Many theories predict the existence of magnetic monopoles, but experiments have yet to see them.
What can the surprisingly huge mass of the black holes detected by LIGO tell us about dark matter and the early universe?
A new tool lets astronomers listen to the universe for the first time.
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?