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Dark matter hasn’t been directly detected, but some form of invisible matter is clearly gravitating. Could the graviton hold the answer?

Some constants, like the speed of light, exist with no underlying explanation. How many “fundamental constants” does our Universe require?

So far, Earth is the only planet that we’re certain possesses active life processes. Here’s what we shouldn’t assume about life elsewhere.

Everything acts like a wave while it propagates, but behaves like a particle whenever it interacts. The origins of this duality go way back.

Ever since the Big Bang, cataclysmic events have released enormous amounts of energy. Here’s the greatest one ever witnessed.

Most stars shine with properties, like brightness, that barely change at all with time. The ones that do vary help us unlock the Universe.

The farther away they get, the smaller distant galaxies look. But only up to a point, and beyond that, they appear larger again. Here’s how.

All telescopes are fundamentally limited in what they can see. JWST reveals more distant galaxies than Hubble, but still can’t see them all.

In our Universe, matter is made of particles, while antimatter is made of antiparticles. But sometimes, the physical lines get real blurry.

We normally think of dark matter as the “glue” that holds galaxies and larger structures together. But it’s so much more than that.

The Parker Solar Probe is about to undergo its seventh encounter with Venus on its journey toward the Sun. Here’s how fast it’ll go.

A new family of drugs is changing the way scientists are thinking about obesity.

Sometimes, going “deeper” doesn’t reveal the answers you seek. By viewing more Universe with better precision, ESA’s Euclid mission shines.

The familiar terrain of solids, liquids, and gases gives way to the exotic realms of plasmas and degenerate matter.

U.S. particle physicists recently recommended a list of major research projects that they hope will receive federal funding.

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

It could one day fuel nuclear fusion reactors.

You might think it’s impossible to run out of wind, but Europe’s “wind drought” proves otherwise. And it’s only going to get worse.

For a substantial fraction of a second after the Big Bang, there was only a quark-gluon plasma. Here’s how protons and neutrons arose.

The new electrically conductive substrate could be the future of hydroponic farming.

Positron emission tomography (PET) scans use positrons — the antimatter equivalent of an electron — to locate cancer in the body.

Mars and Earth were sister planets in many ways, with early similar conditions. Why did Mars die? The leading explanation isn’t universal.

We’re separating the facts about EVs from the fiction.

The first stars in the Universe were made of pristine material: hydrogen and helium alone. Once they die, nothing escapes their pollution.

Two of the answers add a dimension to physics that doesn’t belong there. Maybe we could call it “astrotheology.”

Gamma-ray bursts are among the most energetic cosmic events of all. On October 9, 2022, a remarkable one occurred: the brightest ever seen.

Yes, dark energy is real. Yes, distant galaxies recede faster and faster as time goes on. But the expansion rate isn’t accelerating at all.

Although many of Einstein’s papers revolutionized physics, there’s one Einsteinian advance, generally, that towers over all the rest.

A high-fat diet might trigger inflammation of the hypothalamus.

Nobel Laureate Roger Penrose, famed for his work on black holes, claims we’ve seen evidence from a prior Universe. Only, we haven’t.