What's up in
Black Hole Singularities Are as Inescapable as Expected
For the first time, physicists have calculated exactly what kind of singularity lies at the center of a realistic black hole.
Top Dark Matter Candidate Loses Ground to Tiniest Competitor
Physicists have long searched for hypothesized dark matter particles called WIMPs. Now, focus may be shifting to the axion — an ultra-lightweight particle whose existence would solve two mysteries at once.
Hologram Within a Hologram Hints at Fate of Black Holes
Calculations involving a higher dimension are guiding physicists toward a misstep in Stephen Hawking’s legendary black hole analysis.
What Shape Is the Universe? A New Study Suggests We’ve Got It All Wrong
Most every cosmologist believes the universe is flat. A new analysis argues that it’s closed.
Perceptions of Musical Octaves Are Learned, Not Wired in the Brain
Singing experiments with residents of the Bolivian rainforest demonstrate how biology and experience shape the way we hear music.
The Most-Magnetic Objects in the Universe Attract New Controversy
How do magnetars get so magnetic? A study of stellar explosions shows that the long-accepted theory might be wrong.
Google and IBM Clash Over Milestone Quantum Computing Experiment
Today Google announced that it achieved “quantum supremacy.” Its chief quantum computing rival, IBM, said it hasn’t. The disagreement hinges on what the term really means.
Mathematicians Begin to Tame Wild ‘Sunflower’ Problem
A major advance toward solving the 60-year-old sunflower conjecture is shedding light on how order begins to appear as random systems grow in size.