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How (not) to end up in the ash heap of history.

Today, the Large Hadron Collider is the most powerful particle physics experiment in history. What would a new, successor collider teach us?

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

Just 13.8 billion years after the hot Big Bang, we can see objects up to 46.1 billion light-years away. No, this doesn’t violate relativity.

There’s no upper limit to how massive galaxies or black holes can be, but the most massive known star is only ~260 solar masses. Here’s why.

In the early stages of the hot Big Bang, matter and antimatter were (almost) balanced. After a brief while, matter won out. Here’s how.

One of the most promising dark matter candidates is light particles, like axions. With JWST, we can rule out many of those options already.

From the explosions themselves to their unique and vibrant colors, the fireworks displays we adore require quantum physics.

The first elements in the Universe formed just minutes after the Big Bang, but it took hundreds of thousands of years before atoms formed.

Back during the hot Big Bang, it wasn’t just charged particles and photons that were created, but also neutrinos. Where are they now?

The Multiverse fuels some of the 21st century’s best fiction stories. But its supporting pillars are on extremely stable scientific footing.

Launched in March, the PUNCH mission has viewed two incredible coronal mass ejections, tracking them farther from the Sun than ever before.

Measurements of the acceleration of the universe don’t agree, stumping physicists working to understand the cosmic past and future. A new proposal seeks to better align these estimates — and is likely testable.

Earth, the only rocky planet with a large, massive satellite, is greatly affected by the Moon. Destroying it would cause 7 major changes.

Across all wavelengths of light, the Sun is brighter than the Moon. Until we went to the highest energies and saw a gamma-ray surprise.

Cosmic inflation is the state that preceded and set up the hot Big Bang. Here’s what the Universe was like during that time period.

The future belongs to complexity.

From ancient Greek cosmology to today’s mysteries of dark matter and dark energy, explore the relentless quest to understand the Universe’s invisible forces.

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

The second law of thermodynamics tells us that entropy always increases. But that doesn’t mean it was zero at the start of the Big Bang.

In the infant Universe, particle physics reigned supreme.

In our Universe, all stable atomic nuclei have protons in them; there’s no stable “neutronium” at all. But what’s the reason why?

According to neuropsychologist Julia DiGangi, no one can live a life free of emotional pain. We can only choose how those emotions empower us.

Black holes encode information on their surfaces, but evaporate away into Hawking radiation. Is that information preserved, and if so, how?

In general relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?

To know how to protect its astronauts, NASA needs to first understand the threat.

The properties of a ghostly particle called a neutrino are coming into focus.

The miniaturization of particle accelerators could disrupt medical science.

In a recent paper, biologists outlined a three-part hypothesis for how all life as we know it began.

Some 13.8 billion years ago, the Universe became hot, dense, and filled with high-energy quanta all at once. Here’s what it was like.