Explainer
What Is Dark Energy?
Dark energy is a name for an observation, not an explanation of it. The observation is that cosmic expansion is speeding up, and the whole question is whether the thing…
Articles
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Research write-ups, analysis and explainers, newest first. Every article is grounded in primary literature and the numbers link to the papers they came from.
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Explainer
How Do We Know How Bright a Supernova Was?
Type Ia supernovae are the rulers cosmology uses to measure the expanding universe, and they are usually called standard candles, as if they all shone equally brightly. They do not.…
Explainer
What Is the Double-Slit Experiment?
Fire electrons one at a time at two slits and they land as single dots, yet the dots build up into the stripes of a wave. Try to find out…
Explainer
What Does a Dark Matter Detector Actually Measure?
On 26 August 2026, two kilometres under Ontario, SuperCDMS began collecting its first scientific data. No detector can see dark matter. What it measures is heat and charge, two numbers…
Explainer
What Is the Hubble Tension?
Measure how fast the universe is expanding using the afterglow of the Big Bang, and you get one number. Measure it using nearby stars and exploding suns, and you get…
Explainer
What Is Quantum Advantage?
Google claimed quantum advantage in 2019, and within a few years classical computers had closed most of the gap. IBM claimed a version of it in 2023, and ordinary computers…
Analysis
Why Has Supersymmetry Not Been Found?
For thirty years supersymmetry was the safe bet for what comes after the Standard Model. It predicted a heavier partner for every known particle, it solved several deep problems at…
Explainer
Is the Muon g-2 Anomaly Still an Anomaly?
For twenty years, the muon's magnetism was the most promising crack in the Standard Model: it came out slightly larger than theory predicted, and the gap refused to go away.…
Explainer
What Is Quantum Entanglement?
Erwin Schrodinger coined the word in 1935 to name the one thing quantum mechanics did that classical physics could not. Ninety years later, entanglement is no longer a paradox to…
Explainer
Quantum Decoherence: Why the Quantum World Looks Classical
Nothing in quantum mechanics forbids a cat from being alive and dead at once. Superposition has no size limit written into the theory, and yet nobody has ever seen a…
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