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As the Sun ages, it loses mass, causing Earth to spiral outward in its orbit. Will that cool the Earth down, or will other effects win out?

Gravitational waves carry enormous amounts of energy, but spread out quickly once they leave the source. Could they ever create black holes?

CERN’s NA64 experiment used a high-energy muon beam technique to advance the elusive search for dark matter, offering new hope for solving one of astronomy’s greatest mysteries.

As wind power grows around the world, so does the threat the turbines pose to wildlife. From simple fixes to high-tech solutions, new approaches can help.

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?

Nuclear fusion has long been seen as the future of energy. As the NIF now passes the breakeven point, how close are we to our ultimate goal?

From the earliest stages of the hot Big Bang (and even before) to our dark energy-dominated present, how and when did the Universe grow up?

A look back at the rise of solar power in the US and what’s next.

Today, the deepest depths of intergalactic space aren’t at absolute zero, but at a chill 2.73 K. How does that temperature change over time?

The Universe is expanding, and the Hubble constant tells us how fast. But how can it be a constant if the expansion is accelerating?

First derived by Emmy Noether, for every symmetry a theory possesses, there’s an associated conserved quantity. Here’s the profound link.

In general relativity, matter and energy curve spacetime, which we experience as gravity. Why can’t there be an “antigravity” force?

We need more data centers for AI. Developers are getting creative about where to build them.

They are expected to be cheaper to build and even more reliable than today’s nuclear plants.

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.

An enormous amount of antimatter is coming from our galactic center. But the culprit probably isn’t dark matter, but merely neutron stars.

The Universe isn’t just expansion, but the expansion itself is accelerating. So why can’t we feel it in any measurable way?

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

The zero-point energy of empty space is not zero. Even with all the physics we know, we have no idea how to calculate what it ought to be.

Bang bang all over the Universe.

When it comes to predicting the energy of empty space, the two leading theories disagree by a factor of 100 googol quintillion.

When the hot Big Bang first occurred, the Universe reached a maximum temperature never recreated since. What was it like back then?

The evolution of quantum technology is far from over.

In the earliest stages of the hot Big Bang, equal amounts of matter and antimatter should have existed. Why aren’t they equal today?

Black holes are the most massive individual objects, spanning up to a light-day across. So how do they make jets that affect the cosmic web?

In the 20th century, many options abounded as to our cosmic origins. Today, only the Big Bang survives, thanks to this critical evidence.

Inflation, dark matter, and string theory are all proposed extensions to the prior consensus picture. But what does the evidence say?

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.

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

The Universe has been creating stars for nearly all 13.8 billion years of its history. But those photons can’t match the Big Bang’s light.