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Einstein’s relativity teaches us that time isn’t absolute, but passes relatively for everyone. So how do telescopes see back through time?

In 2022, the probe will crash into an asteroid while a nearby satellite captures it on camera.

From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.

Recasting the iconic Carrington Event as just one of many superstorms in Earth’s past, scientists reveal the potential for even more massive eruptions from the sun.

When people pick the greatest scientist of all-time, Newton and Einstein always come up. Perhaps they should name Johannes Kepler, instead.

The fruits of long-term thinking will reveal themselves in five or ten or 30 years, when you’ve created the future you’ve always wanted.

Singapore is a breeding ground of truly green buildings.

Your life is far more arbitrary than you might think.

Air conditioning may keep a room cool, but using it is heating up the planet. It is time for something new — or old.

A Harvard professor’s study discovers the worst year to be alive.

We think of physical reality as what objectively exists, independent of any observer. But relativity and quantum physics say otherwise.

Any dataset that can be quantified over time can be turned into a contest that is both exciting and (a little bit) enlightening.

Every year, scientists like George Church get better at editing the genomes of human beings. But will genome editing help or hurt us?

Physics demands that it couldn’t be any other way. Here’s why. Ask anyone — even someone with no background in science — to name something that Einstein did, and odds are they’ll come back with […]

Galaxies can have regions both hotter and colder than the background radiation of the Universe. When we talk about the depths of space, we get this picture in our heads […]

The credibility problem facing the biomedical and public health establishment is, at least in part, a product of its own making.

This is a time for family and friends to gather, watch the full moon and eat mooncakes and other delicacies.

A decade ago, scientists weren’t able to confidently connect any individual weather event to climate change, even though the warming trends were clear.

They say that nobody understands quantum mechanics. But thanks to these three pioneers in quantum entanglement, perhaps we do.

Earth is the Solar System’s only known inhabited planet. Could Venus, if its phosphine signal is real, be our second world with life?

It does not matter if intelligent life exists elsewhere. We will never find each other.

The 2021 Quality of Government Index shows how much trust the citizens of Europe place in each other and in their elected politicians.

Many workers moved home on the promise or hope that they’d be able to keep working remotely at least some of the time after the pandemic ended.

When facing a predator, single cells sometimes unite to defend themselves, paving the way for more complex multicellular life forms to evolve.

Your brain is remarkably good at mapping out physical spaces — even if it’s an imaginary space like Hogwarts. But how does the brain do it?

There’s an extra source of massive “stuff” in our Universe beyond what gravitation and normal matter can explain. Could light be the answer?

Searching for happiness in the midst of personal or societal crises are nothing new.

Is there actually anything deserving of the term AI?

Brian C. Muraresku, New York Times best-selling author of “The Immortality Key,” unpacks ancient evidence for the widespread ritual use of psychoactive plants.

The very concept of a “problem with no solution” goes against human nature. But we must accept this harsh reality to have peace in our lives.