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There’s some amazing science happening at the South Pole, but some very grandiose claims being made. What’s actually going on? For some of us, the idea of parallel Universes spark our […]

After 13.8 billion years, there’s still a whole lot that’s changing as time goes on. With each new year that comes upon us, there are a slew of new events awaiting […]

An Oxford scientist’s controversial theory rethinks dark matter and dark energy.

What do the inventions of the future look like?

If the universe is expanding in all directions, why is Andromeda hurtling toward the Milky Way?

It’s very different from the colloquial meanings of “true-and-false” or “right-and-wrong.” In many ways, the human endeavor of science is the ultimate pursuit of truth. By asking the natural world […]

Black holes are regions of extreme gravity, but dark matter barely interacts at all. Do they play well together? Black holes are some of the most extreme objects in the […]

It’s 13.8 billion years old, with an uncertainty of just 1%. Here’s how. How old is the Universe? For generations, people argued over whether the Universe had always existed, whether it […]

A single thought experiment reveals a paradox. Could quantum gravity be the solution? Sometimes, if you want to understand how nature truly works, you need to break things down to […]

They said the “missing half” of the Universe’s matter was just found. But what they found barely makes a dent to the big picture. When we look up into the great […]

The idea that celestial objects exist within utterly immense cosmic structures is becoming inescapable.

A lot goes into being weightless.

The present? Blink and you’ll miss it. And other musings on time.

Gravity and time are so different from what you’d expect. Here’s how it all would end. If you could only know the answer to one question about the Universe, what would […]

The process of digging into hard questions makes the moment of discovery all the more satisfying.

In physics, anything that isn’t forbidden must occur. So why don’t the strong interactions violate CP-symmetry? If you ask a physicist what the biggest unsolved problem facing the field today […]

It’s one of the most consistent patterns in the unviverse. What causes it?

It’s often said that every element was made in a star, but there’s more to it than that.

Conspiracy theories about the event dating back to the 1970s are in fact more popular than ever.

If we ruin the night sky too severely, ground-based astronomy could suffer tremendously. Here’s why space is no replacement. There is an existential threat to astronomy as we know it, […]

Is information the fifth form of matter?

If you understand gravity well enough, you might not even need a telescope to revolutionize astronomy. In science, advances arise at the intersection of theory and real-world observation. One of […]

The Red Planet, the God of War, and important life lessons for us all.

Hubble has been operational for nearly 30 years, and still produces the most spectacular images of all. Here are this year’s best. Hubble, astronomy’s revolutionary observatory, narrowly survived last year’s gyroscope […]

Matter can indeed sprout out of nothingness, causing the universe to expand.

If parallel Universes or the multiverse are real, we might someday encounter a visitor who hails from another one. Here’s what to do. There are a lot of things that are […]

There are places in our solar system where you can fly.

Red, green, and blue? What we call ‘color charge’ is far more interesting than that. At a fundamental level, reality is determined by only two properties of our Universe: the quanta […]

When you emit gravitational waves, they have to pass through the Universe. But do they gravitate, too? When you travel through the Universe, it isn’t just a free ride through […]

In the mid-20th century, ‘physical cosmology’ was considered an oxymoronic joke. Today, it’s Nobel-winning science. Imagine you wanted to know everything you could about the Universe. You’d want to find […]