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Gravity defies quantum mechanics. What does that mean for a theory of everything?

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?

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

There is no such thing as a void in the Universe.

The very word “quantum” makes people’s imaginations run wild. But chances are you’ve fallen for at least one of these myths.

To Einstein, nature had to be rational. But quantum physics showed us that there was not always a way to make it so.

Though quantum mechanics is an incredibly successful theory, nobody knows what it means. Scientists now must confront its philosophical implications.

It’s 2024, and we still only know of the fundamental particles of the Standard Model: nothing more. But these 8 unanswered questions remain.

The central equation of quantum mechanics, the Schrödinger equation, is different from the equations found in classical physics.

When you combine the Uncertainty Principle with Einstein’s famous equation, you get a mind-blowing result: Particles can come from nothing.

By probing the Universe on atomic scales and smaller, we can reveal the entirety of the Standard Model, and with it, the quantum Universe.

Realizing that matter and energy are quantized is important, but quantum particles aren’t the full story; quantum fields are needed, too.

Isaac Newton and Albert Einstein are locked in an eternal battle over the nature of gravity. Whose side are you on?

You will need determination, humility, and courage if you are to master anything.

Sabine Hossenfelder talks about Albert Einstein, dead grandmothers, the physics of aging, and more in this full interview with Big Think.

“Once quantum mechanics is applied to the entire cosmos, it uncovers a three-thousand-year-old idea.”

The quantum world — and its inherent uncertainty — defies our ability to describe it in words.

There could be variables beyond the ones we’ve identified and know how to measure. But they can’t get rid of quantum weirdness.

Scientists can make substantial progress without fully understanding exactly what they’re doing.

What would become the Big Bang model started from a crucial idea: that the young Universe was denser and hotter.

The science fiction dream of a traversable wormhole is no closer to reality, despite a quantum computer’s suggestive simulation.

When one path is blocked, a new one must be paved. How Einstein, Heisenberg and Gödel used constraints to make life-changing discoveries:

Two very different ideas, wormholes and quantum entanglement, might be fundamentally related. What would “ER = EPR” mean for our Universe?

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

It isn’t just identical particles that can be entangled, but even those with fundamentally different properties interfere with each other.

The double-slit experiment, hundreds of years after it was first performed, still holds the key mystery at the heart of quantum physics.

IceCube scientists have detected high-energy tau neutrinos from deep space, suggesting that neutrino transformations occur not only in lab experiments but also over cosmic distances.

Though he renounced philosophy, Stephen Hawking’s final theory of the universe redraws the basic foundations of cosmology.

Holograms preserve all of an object’s 3D information, but on a 2D surface. Could the holographic Universe idea lead us to higher dimensions?

Quantum superposition challenges our notions of what is real.