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Frontier, the ORNL supercomputer, used machine learning to perform 9.95 quintillion calculations per second.

Sci-fi enthusiasts have long hoped that a substance called antimatter might experience gravity opposite that of ordinary matter. It doesn’t.

The answer to this question is key to understanding why anything exists.

“I thought, why not direct these high-power beams, instead of into fusion plasma, down into rock and vaporize the hole?”

Carnivores, herbivores, omnivores — and now virivores.

Before we discovered gravitational waves, multi-messenger astronomy got its start with light and particles arriving from the same event.

Make Sunsets is bringing solar geoengineering from sci-fi to reality.

With the discovery of Porphyrion, we’ve now seen black hole jets spanning 24 million light-years: the scale of the cosmic web.

Earth wasn’t created until more than 9 billion years after the Big Bang. In some lucky places, life could have arisen almost right away.

There are plenty of life-friendly stellar systems in the Universe today. But at some point in the far future, life’s final extinction will occur.

Why “audio gaps” in video meetings wear us out — and why we need the meaningful relationships forged in communal workspaces.

The majority of people in every country support action on climate, but the public consistently underestimates this share.

“Having more stem cell activity is good for regeneration, but too much of a good thing over time can have less favorable consequences.”

It could cut the time needed to reach Mars in half.

Should you blast the A/C even when you’re not at home?

Particle physicists use gigantic accelerators to investigate the infinitesimal.

A more distant galaxy liked the lens so much that it went and put a ring on it. Here’s the science behind this remarkable cosmic object.

Whether you run the clock forward or backward, most of us expect the laws of physics to be the same. A 2012 experiment showed otherwise.

What do you call it when the Earth shakes for three decades?

Extreme home environments — either very supportive or harshly negligent — tend to produce more sensitive kids.

In 2017, a kilonova sent light and gravitational waves across the Universe. Here on Earth, there was a 1.7 second signal arrival delay. Why?

Every power source involves trade-offs. Given the challenges of increasing demand and climate change, what is the future of energy?

Before we formed stars, atoms, elements, or even got rid of our antimatter, the Big Bang made neutrinos. And we finally found them.

Before there were planets, stars, and galaxies, before even neutral atoms or stable protons, there was the Big Bang. How did we prove it?

How does star-formation, occurring in small regions within galaxies, affect the entire host galaxy that contains it? JWST holds the answers.

Nothing lives forever, at least, not in the physical Universe. But relativity allows us to get closer than ever, from one perspective.

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

From black holes to dark energy to chances for life in the Universe, our cosmic journey to understand it all is just getting started.

In 1987, the closest supernova directly observed in nearly 400 years occurred. Will a pulsar arise from those ashes? JWST offers clues.

We thought the Big Bang started it all. Then we realized that something else came before, and it erased everything that existed prior.