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Beautiful Physics: The Search for New Particles at LHCb
Physics

Beautiful Physics: The Search for New Particles at LHCb

The Large Hadron Collider beauty experiment has seen hints of new particles that may point the way toward a higher theory of physics

By Guy Wilkinson
Loopy Particle Math  
Math

Loopy Particle Math  

Scientists are creating mathematical tools to identify novel particles and phenomena at the world's largest particle accelerator

By Matthew von Hippel
World's Fastest Movies Capture Molecules in Motion
Chemistry

World's Fastest Movies Capture Molecules in Motion

New movies of drug proteins or photosynthesis in action, shot in millionths of a billionth of a second, show how the molecules work—or fail

By Petra Fromme and John C. H. Spence
The Neutrino Puzzle
Physics

The Neutrino Puzzle

The largest experiment ever to probe these mysterious particles could point the way to new physics

By Clara Moskowitz
Searching for the Dark: The Hunt for Axions
Space

Searching for the Dark: The Hunt for Axions

The Axion Dark Matter Experiment just entered the most sensitive phase yet in its search for invisible particles to explain the universe's hidden mass

By Leslie Rosenberg
Is Dark Matter Made of Black Holes?
Space

Is Dark Matter Made of Black Holes?

A hidden population of black holes born less than one second after the big bang could solve the mystery of dark matter

By Juan García-Bellido and Sébastien Clesse
Here Come the Waves
Space

Here Come the Waves

After a clutch of historic detections, gravitational-wave researchers have set their sights on some ambitious scientific quarry

By Davide Castelvecchi and Nature magazine
Is Dark Matter Real?
Physics

Is Dark Matter Real?

Astrophysicists have piled up observations that are difficult to explain with dark matter. It is time to consider that there may be more to gravity than Einstein taught us

By Sabine Hossenfelder and Stacy S. McGaugh
The Puzzle of the First Black Holes
Space

The Puzzle of the First Black Holes

Astronomers are puzzled about how the oldest supermassive black holes could have grown so big so early in cosmic history

By Priyamvada Natarajan
Neutron Stars: Nature's Weirdest Form of Matter
Space

Neutron Stars: Nature's Weirdest Form of Matter

The insides of neutron stars—the densest form of matter in the universe—have long been a mystery, but it is one that scientists are starting to crack

By Clara Moskowitz
Does Einstein's Theory of Gravity Hold Near Black Holes?
Space

Does Einstein's Theory of Gravity Hold Near Black Holes?

General relativity has never been tested in places where the effects of gravity become truly extreme—for example, at the edge of a black hole. That will soon change

By Dimitrios Psaltis and Sheperd S. Doeleman
Lost in Thought--How Important to Physics Were Einstein's Imaginings?
Physics

Lost in Thought--How Important to Physics Were Einstein's Imaginings?

Einstein’s thought experiments left a long and somewhat mixed legacy of their own

By Sabine Hossenfelder
Can Quantum Mechanics Save the Cosmic Multiverse?
Space

Can Quantum Mechanics Save the Cosmic Multiverse?

A surprising connection between cosmology and quantum mechanics could unveil the secrets of space and time

By Yasunori Nomura
Spooky Quantum Action Passes Test
Physics

Spooky Quantum Action Passes Test

Recent experiments quash the hope that the unsettling phenomenon of quantum entanglement can be explained away

By Ronald Hanson and Krister Shalm
How Does the Quantum World Cross Over?
Physics

How Does the Quantum World Cross Over?

The universe according to quantum mechanics is strange and probabilistic, but our everyday reality seems nailed down. New experiments aim to probe where—and why—one realm passes into the other...

By Tim Folger
String Theory May Create Far Fewer Universes Than Thought
Space

String Theory May Create Far Fewer Universes Than Thought

Some physicists claim that the popular landscape of universes in string theory may not exist

By Clara Moskowitz and Lee Billings

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  • From the Editor

    Physics at the Limits

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