What if the smallest bits of matter actually harbor an undiscovered world of particles?
Neutrinos, the strangest beasts in the particle zoo, may soon open the way to unexplored realms
Maybe unifying the forces of nature isn't quite as hard as physicists thought it would be
The largest stars die in explosions more powerful than anyone thought possible—some triggered in part by the production of antimatter
Dark matter is not just a puzzle. It is a solution
By adapting a global network of telescopes, astronomers will soon get their first look ever at the dark silhouette of a black hole
The black hole has a troublesome sibling, the naked singularity. Physicists have long thought—hoped—it could never exist. But could it?
Quantum effects may prevent true black holes from forming and give rise instead to dense entities called black stars
Physicists have long sought to find one final theory that would unify all of physics. Instead they may have to settle for several
Entanglement, like many quantum effects, violates some of our deepest intuitions about the world. It may also undermine Einstein's special theory of relativity
Once viewed as imposing absolute limits on knowledge and technology, quantum theory is now expanding the power of computers and the vistas of the mind
Leonard Susskind rebelled as a teen and never stopped. Today he insists that reality may forever be beyond reach of our understanding
Bubble chamber photographs reveal the telltale tracks of exotic subatomic particles