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Neutrinos From Deep Inside Earth Provide a New Picture of the Mantle
A global constellation of neutrino detectors is creating a never-before-seen view of the radioactive elements that power Earth’s tectonic heat engine.
Physicists Solve a Big Quantum Mystery. Now, Old Results Don’t Add Up.
New calculations seem to have put a 25-year-old particle physics puzzle to rest. But they’ve also created a clash with other experimental results.
How Fast Is the Universe Really Expanding?
One of the most contested issues in astrophysics is our understanding of the Universe’s expansion. Adam Riess discusses why there is disagreement and what might resolve it.
Thermodynamic Computers Go With the (Energy) Flow
Today’s computers need safeguards against random energy fluctuations. Thermodynamic computers would put those fluctuations to use.
We Know Simple Fluids Can Flow. Turns Out, Some Can Fracture.
Researchers thought that what enabled complex fluids to break apart was their elasticity. But a crack in a nonelastic simple fluid has them questioning that idea.
Astrophysicists Puzzle Over Webb’s New Universe
Faced with observations of early black holes and galaxies that weren’t expected to exist, scientists have come up with a wealth of new theories to explain them. Now they just need to figure out which ones are true.
How Physicists Track and Trap the Elusive Neutrino
The hunt for these ghostly particles has required some of the most audacious experimental setups ever built.
A Dark Dimension Could Link Two of the Universe’s Great Unknowns
Recent observations suggest that dark energy is changing over time. Theorists wonder if dark matter is, too.
How Many Elementary Particles Are There, Really?
Plausible answers range from 17 to — in all seriousness — 995.5.