Astrophysics has probed a test of a fundamental law, ‘Lorentz invariance,’ well beyond the LHC’s limits. Einstein is still right. The greatest scientific legacy that Albert Einstein left us is this: […]

The NICER experiment, designed to measure neutron stars as never before, just released their first pulsar map, and it’s amazing. After typical supernovae, remnant collapsed cores of matter are left behind. […]

A fascinating mathematical structure exists that goes well beyond our common experience. Could it revolutionize physics? Perhaps the most remarkable fact about the Universe is that every particle within it — at […]

How can physics on the smallest scales affect what the Universe does on its largest ones? Cosmic inflation holds the answer. On a macroscopic level, the Universe appears to be entirely […]

The quest for the ultimate vacuum just got taken to the next level thanks to a new technique: the quantum squeezer. One of the most understated frontiers in all of […]

It’s much more complex a question than dividing its mass by the volume of the event horizon. If you want to get a meaningful answer, you have to go deep. If […]

When the Universe expands, photons redshift to longer wavelengths and lower energies. So where does that energy go? Imagine the ultimate version of a toy Universe: it’s expanding, it’s full of […]

All protons have the same exact mass as every other proton. For particles like the Higgs boson, this isn’t true. One of the most puzzling aspects of quantum physics is how […]

When you’re trying to peel back the veil obscuring the fundamental nature of matter, you have to look absolutely everywhere. Sometimes, the solution to a puzzle you’ve been stymied by […]

Just because you can design an experiment to test for something doesn’t mean you should trust the results. Is there another Universe out there? The Universe we know and inhabit, the […]

The laws of physics are not time-reversal invariant. Here’s how we know. No matter when, where, or what you are in the Universe, you experience time in only one direction: forwards. […]

From explosions to their unique and vibrant colors, the fireworks displays we adore require quantum physics. This Thursday, July 4, 2019, is remarkable for a number of reasons. It happens to […]

It’s made up of scores of telescopes at many different sites across the world. But it acts like one giant telescope. Here’s how. If you want to observe the Universe more […]

If parallel Universes or the multiverse are real, we might someday encounter a visitor who hails from another one. Here’s what to do. There are a lot of things that are […]

The transition across a quantum barrier is known as quantum tunneling, and the amount of time it takes for such a transition to occur had never been measured before. For […]

If you accept cosmic inflation and quantum physics, there’s no way out. The Multiverse is real. Look out at the Universe all you want, with arbitrarily powerful technology, and you’ll never […]

The ability to instantaneously jump from one location in space to another clearly violates the laws of physics. Or does it? There are a few rules in the Universe that seem […]

The best books, calendar, accessories and more are all just one click away. Every year, there are no shortage of wonderful, exciting, informative gifts you could get for those who matter […]

With the right material at the right temperature and a magnetic track, physics allows you to never lose energy. The idea of levitating off the ground has been a staple of […]

The answer has nothing at all to do with the Higgs boson. In this Universe, there are very few fundamental properties that cannot be derived from something simpler. The rules governing […]

If antimatter falls up instead of down, countless sci-fi dreams will become scientific reality. One of the most astonishing facts about science is how universally applicable the laws of nature […]

There may be a fundamental reason why time travel, backwards, is impossible. We’ve all had the dream of traveling back in time. Whether there’s a wrong we want to right, […]

No matter what Martin Rees or anyone else says, physics dictates that the world is safe. The Large Hadron Collider is the world’s most powerful particle accelerator. An aerial view of […]

On September 27, 1972, scientists performed the first test of Bell’s inequality. God does play dice with the Universe, after all. One of the most puzzling and counterintuitive aspects of quantum […]

Of all the experiments performed and measurements made involving fundamental particles, none has ever violated the Standard Model. Until now. If there’s one thing you can count on physicists for, it’s […]

If our current laws of physics can’t predict what will happen, even probabilistically, we need something new. There are two theories we have that explain all the particles and their […]

Our best physical theories predict that a multiverse exists. But if we can’t test it, is it really scientific? The Universe is all there ever was, all there is, and […]

In the search for fundamental truths in our Universe, one of the biggest questions, “are space and time continuous or discrete,” remains unanswered. Throughout the history of science, one of […]

We see matter, but not antimatter, in our Universe. Could black holes be the answer? One of the greatest cosmic puzzles in our entire Universe is why there’s so much more […]

In the quantum world of the unstable, even identical particles don’t have identical masses. In the microscopic world of the quantum particle, there are certain rules that are wholly unfamiliar […]