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Diminishing Dark Energy May Evade the ‘Swampland’ of Impossible Universes
The largest-ever 3D map of the cosmos hints that the dark energy that’s fueling the universe’s expansion may be weakening. One community of theoretical physicists expected as much.
The Webb Telescope Further Deepens the Biggest Controversy in Cosmology
A long-awaited study of the cosmic expansion rate suggests that when it comes to the Hubble tension, cosmologists are still missing something.
The Geometric Tool That Solved Einstein’s Relativity Problem
Tensors are used all over math and science to reveal hidden geometric truths. What are they?
Physicists Pinpoint the Quantum Origin of the Greenhouse Effect
Carbon dioxide’s powerful heat-trapping effect has been traced to a quirk of its quantum structure. The finding may explain climate change better than any computer model.
‘Metaphysical Experiments’ Probe Our Hidden Assumptions About Reality
Experiments that test physics and philosophy "as a single whole" may be our only route to surefire knowledge about the universe.
Vacuum of Space to Decay Sooner Than Expected (but Still Not Soon)
One of the quantum fields that fills the universe is special because its default value seems poised to eventually change, changing everything.
What Could Explain the Gallium Anomaly?
Physicists have ruled out a mundane explanation for the strange findings of an old Soviet experiment, leaving open the possibility that the results point to a new fundamental particle.
Tracing the Hidden Hand of Magnetism in the Galaxy
Susan Clark is helping to unravel the mysterious workings of the Milky Way’s magnetic field, a critical missing piece of the galactic puzzle.
How Is Science Even Possible?
How are scientists able to crack fundamental questions about nature and life? How does math make the complex cosmos understandable? In this episode, the physicist Nigel Goldenfeld and co-host Steven Strogatz explore the deep foundations of the scientific process.