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Physicists just can’t leave an incomplete theory alone; they try to repair it. When nature is kind, it can lead to a major breakthrough.

There are two methods to measure the expansion rate of the Universe. The results do not agree with each other, and this is a big problem.

When cosmic inflation came to an end, the hot Big Bang ensued as a result. If our cosmic vacuum state decays, could it all happen again?

Taught in every introductory physics class for centuries, the parabola is only an imperfect approximation for the true path of a projectile.

The evidence that the Universe is expanding is overwhelming. But how? By stretching the existing space, or by creating new space itself?

If nature were perfectly deterministic, atoms would almost instantly all collapse. Here’s how Heisenberg uncertainty saves the atom.

The second law of thermodynamics is an inviolable law of reality. Here’s what everyone should know about closed, open, and isolated systems.

Glueballs are an unusual, unconfirmed Standard Model prediction, suggesting bound states of gluons alone exist. We just found our first one.

In the expanding Universe, different ways of measuring its rate give incompatible answers. Nobel Laureate Adam Riess explains what it means.

Early on, only matter and radiation were important for the expanding Universe. After a few billion years, dark energy changed everything.

When we divide matter into its fundamental, indivisible components, are those particles truly point-like, or is there a finite minimum size?

Symmetries aren’t just about folding or rotating a piece of paper, but have a profound array of applications when it comes to physics.

The multiverse pushes beyond the limits of the scientific method. From our vantage point in the Universe, we cannot know if it’s real.

Explanations for the cosmic speed limit often conflate mass with inertia.

If the Universe is expanding, and the expansion is accelerating, what does that tell us about the cause of the expanding Universe?

No matter how good our measurement devices get, certain quantum properties always possess an inherent uncertainty. Can we figure out why?

It’s not about particle-antiparticle pairs falling into or escaping from a black hole. A deeper explanation alters our view of reality.

The mutual distance between well-separated galaxies increases with time as the Universe expands. What else expands, and what doesn’t?

Here on Earth, we commonly use terms like weight (in pounds) and mass (in kilograms) as though they’re interchangeable. They’re not.

It may be time for a cosmological paradigm shift.

If you bring too much mass or energy together in one location, you’ll inevitably create a black hole. So why didn’t the Big Bang become one?

Welcome to The Nightcrawler — a weekly newsletter from Eric Markowitz covering tech, innovation, and long-term thinking.

Emotion dysregulation has been linked to unhealthy risk-taking, relationship challenges, and negative physical health outcomes.

For many years, some cosmologists embraced the idea of an eternal, steady state universe. But science triumphed over philosophical prejudice.

Named “Phoenix,” this AI-powered humanoid could be your next coworker.

Without wormholes, warp drive, or some type of new matter, energy, or physics, everyone is limited by the speed of light. Or are they?

The laws of physics aren’t changing. But the Earth’s conditions are different than what they used to be, and so are hurricanes as a result.

No matter what physical system we consider, nature always obeys the same fundamental laws. Must it be this way, and if so, why?

Almost 100 years ago, an asymmetric pathology led Dirac to postulate the positron. A similar pathology could lead us to supersymmetry.

Twin Health lets patients with diabetes see what’s happening inside their own body and can model each patient’s unique metabolism.