What Happens if You Drop Antimatter? New Gravitational Test Sees First Fall
In theory, physicists knew that antimatter should behave just like matter under gravity’s pull. But until now, no one had ever seen it happen
Will Scientists Ever Find a Theory of Everything?
Physicists are on an ever urgent quest to find a fuller understanding of what makes the cosmos tick, which they call a theory of everything
A Background ‘Hum’ Pervades the Universe. Scientists Are Racing to Find Its Source
Astronomers are now seeking to pinpoint the origins of an exciting new form of gravitational waves that was announced earlier this year
Time Flowed Five Times Slower Shortly after the Big Bang
Voracious black holes feeding on matter in the early universe display the curious spacetime phenomenon known as time dilation
Gravitational-Wave Search Resumes after Three Years and Lots of Headaches
Researchers still hope to discover hundreds of new binary black hole mergers despite technical setbacks that have sidelined key detectors in Italy and Japan
Six Gravitational-Wave Breakthroughs Scientists Can’t Wait to See
After years of downtime for upgrades, the world’s premier gravitational-wave observatories are coming back online with big hopes for transformative discoveries
Quantum Theory’s ‘Measurement Problem’ May Be a Poison Pill for Objective Reality
Solving a notorious quantum quandary could require abandoning some of science’s most cherished assumptions about the physical world
See the Sharp New Image of an Iconic Black Hole
Using machine learning, researchers have now created a much sharper portrait of the supermassive black hole at the center of the galaxy M87
Dark Matter Hunters Need Fresh Answers
The hunt for dark matter is in crisis, and it’s time for radical new ideas to explain our universe
6 Times Quantum Physics Blew Our Minds in 2022
Quantum telepathy, laser-based time crystals, a glow from empty space and an “unreal” universe—these are the most awesome (and awfully hard to understand) results from the subatomic realm we encountered in 2022
The Universe Is Not Locally Real. Here’s How Physicists Proved It
Elegant experiments with entangled light have laid bare a profound mystery at the heart of reality
Einstein’s Greatest Theory Just Passed Its Most Rigorous Test Yet
The MICROSCOPE mission tested the weak equivalence principle with free-falling objects in a satellite