Karen Uhlenbeck’s pioneering work marries math with physics. Her work in the field of mathematical physics has earned her numerous honors and awards, including the 1988 Noether Lecture award, the National Medal of Science in 2001, and the 2007 Steele Prize for a Seminal Contribution to Mathematical Research from the American Mathematical Society. A MacArthur fellow, she is also the first woman to win the Abel Prize in its 17-year history.
An Italian experiment has a 20-year signal of what could be dark matter—and scientists are embarking on their most promising efforts yet to confirm or refute its results. For more than two decades, DAMA has observed a regularly changing signal that its operators think comes from our planet’s movements through the “halo” of dark matter suffusing the Milky Way galaxy.
Photographer Adam Nadel started his residency at Fermilab taking the portraits he is known for, but then he found himself venturing onto new artistic ground.
Our world is governed by general relativity, which sees gravity as the effects of massive objects warping space-time. The world of particle physics, on the other hand, envisions all forces as mediated by force-carrying particles — and ignores gravity entirely. This year’s Breakthrough Prize in Fundamental Physics was awarded to three theorists who proposed a way to marry these contradictory descriptions: with a theory called “supergravity.”
In recent years, scientists have found ways to study black holes, listening to the gravitational waves they unleash when they collide and even creating an image of one by combining information from radio telescopes around the world. But our knowledge of black holes remains limited. So scientists are figuring out how to make do with substitutes — analogs to black holes that may hold answers to mysteries about gravity and quantum mechanics.
Imagine a particle. What comes to mind? If you aren’t a theoretical particle physicist, chances are you picture a tiny ball, bobbing in space. But that’s not quite correct. One way to prove it: Try to imagine that tiny ball as a particle with no mass. If a particle has no mass, how can it exist?
As she grew up in the small town of San Pellegrino in the Italian Alps, three things conspired to make Maria Elena Monzani a physicist: a fascination for outer space, a Nobel Prize and a nuclear disaster. Now she prepares an international team to search for clues to one of the biggest scientific mysteries.
Right now could be considered one of the best — and most uncertain — times in theoretical physics. That’s what Symmetry heard in interviews with 10 junior faculty in the field. They talk about what keeps them up at night, their favorite places to think and how they explain their jobs to nonscientists.
A new study shows that light dark matter is 1000 times less likely to bump into regular matter than previous analyses allowed.
Few numbers have gotten under astronomers’ skin like the Hubble constant. In fact, experts have debated the value of this single parameter for 90 years, and if astronomers can measure its value with great precision, they’ll be one step closer to solving some of the other grand astronomical mysteries of our age. There’s just one problem: The measurements they’ve taken don’t agree. The discrepancy makes scientists question whether something is amiss in our understanding of the universe.