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Ann Nelson Took On the Biggest Problems in Physics
The theoretical particle physicist Ann Nelson, who died on August 4 at age 61, was a font of brilliant ideas and a champion of ending discrimination in the field.
The Puzzling Search for Perfect Randomness
Does objective, perfect randomness exist, or is randomness merely a product of our ignorance?
To Make Two Black Holes Collide, Try Three
How do black holes merge and make gravitational waves? Maybe with a little help from their friends.
Cosmologists Debate How Fast the Universe Is Expanding
New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.
A Call for Courage as Physicists Confront Collider Dilemma
Carlo Rubbia, leader of the bold collider experiment that in 1983 discovered the W and Z bosons, thinks particle physicists should now smash muons together in an innovative “Higgs factory.”
The Universal Law That Aims Time’s Arrow
A new look at a ubiquitous phenomenon has uncovered unexpected fractal behavior that could give us clues about the early universe and the arrow of time.
Bubble Experiment Finds Universal Laws
Physicists have found examples of “universality” in a system of confined bubbles. The work could help researchers understand the strange behavior of singularities.
Physicists Peer Inside a Fireball of Quantum Matter
Experimenters in Germany have glimpsed the kind of strange, non-atomic matter thought to fill the cores of merging neutron stars.
Sun’s Puzzling Plasma Recreated in a Laboratory
For the first time, researchers have created a scale model of the twisting loops of the sun’s magnetic field.