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When Einstein gave General Relativity to the world, he included an extraneous cosmological constant. How did his ‘biggest blunder’ occur?

Neuroscientists think a cluster of cells in the brain that stimulate appetite could be a target for eating disorder therapies.

It could one day fuel nuclear fusion reactors.

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.

On the largest cosmic scales, galaxies line up along filaments, with great clusters forming at their intersection. Here’s how it took shape.

An in-depth interview with astronomer Kelsey Johnson, whose new book, Into the Unknown, explores what remains unknown about the Universe.

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.

“Imagination is more important than knowledge” is often taken to mean that your conceptions outweigh what’s real. That’s not what he said.

Newborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?

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.

Every proton contains three quarks: two up and one down. But charm quarks, heavier than the proton itself, have been found inside. How?

In the spirit of the 1969 moon landing, we now have a golden opportunity to pursue “nondisruptive” creative solutions.

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

For millennia, diamonds were the hardest known material, but they only rank at #7 on the current list. Can you guess which material is #1?

A non-invasive method for looking inside structures is solving mysteries about the ancient pyramid.

What the breakthrough methods of laboratory research can teach the business world about brainstorming.

Morning, afternoon, or night: When is the best time to exercise? Scientists have extensively studied this question. Here’s what they found.

For the first time, astronomers have created a data-driven estimate for how many black holes are in our Universe: more than anyone expected.

In nature, business, and life, survival doesn’t belong to the optimized — it belongs to those with a built-in buffer.

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.

Every time our Universe cools below a critical threshold, we fall out of equilibrium. That’s the best thing that ever happened to us.

A cute mathematical trick can “rescale” the Universe so that it isn’t actually expanding. But can that “trick” survive all our cosmic tests?

“Stargate” could be used to train the world’s most powerful AIs.

What do we mean by a black hole’s size? A photon sphere? The minimal stable orbit? The event horizon? The singularity? Which one is right?

For many years, some cosmologists embraced the idea of an eternal, steady state universe. But science triumphed over philosophical prejudice.

When white dwarfs explode, they create a type Ia supernovae. After decades of following the leading theory, here’s the complete overhaul!

In around 7 billion years, we expect the Sun to run out of fuel, dying in a planetary nebula/white dwarf combination. Is that for certain?

What would become the Big Bang model started from a crucial idea: that the young Universe was denser and hotter.

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

The hot Big Bang is often touted as the beginning of the Universe. But there’s one piece of evidence we can’t ignore that shows otherwise.