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The answer may lie in the particular way sand forms on Titan.

Life finds a way — particularly if it has a moon.

Although we still don’t know the question, we know that the answer to life, the Universe, and everything is 42. Here are 5 possibilities.

Valles Marineris is the Solar System’s grandest canyon, many times longer, wider, and deeper than the Grand Canyon. What scarred Mars so?

Albert Einstein and his theory of general relativity continue to amaze us to this day.

We only detected our very first gravitational wave in 2015. Over the next two decades, we’ll have thousands more.

To clear Scotland’s roads in winter, the local traffic agency employs heavy machinery with punny names. Can you grit and bear it?

All the stars, stellar corpses, planets, and other large, massive objects take on spherical or spheroidal shapes. Why is that universal?

Because of dark energy, distant objects speed away from us faster and faster as time goes on. How long before every galaxy is out of reach?

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

In all of science, no figures have changed the world more than Einstein and Newton. Will anyone ever be as revolutionary again?

How can you “touch the Sun” if you’ve always been inside the solar corona, yet will never reach the Sun’s photosphere?

Archaeologists turn to other scientific fields to fill in the picture of how victims lived and why they died.

Some fascinating observations of K2-18b have come along with horrendous, speculative communications. There’s no evidence for oceans or life.

Newton thought that gravitation would happen instantly, propagating at infinite speeds. Einstein showed otherwise; gravity isn’t instant.

Some think the reason fundamental scientific revolutions are so rare is because of groupthink. It’s not; it’s hard to mess with success.

When three wise men gifted baby Jesus with gold, frankincense, and myrrh, they had no idea one was made from colliding neutron stars.

From hellishly hot planets to water worlds, some distant planets are like nothing in our Solar System.

Our Sun will continue to grow, becoming a red giant and then a planetary nebula. Here’s how large it will get.

The odds are slim, but the consequences would be literally world-ending. There really is a chance of a black hole devouring the Earth.

With the right material at the right temperature and a magnetic track, physics really does allow perpetual motion without energy loss.

It’s the origin of our entire observable Universe, but it’s still not the very beginning of everything.

Graphical user interfaces are how most of us interact with computers, from iPhones to laptops. But they were once condemned as making students lazy and destroying the art of writing.

Is science absolute? Its truths and discoveries guide us toward the nature of reality, but we must always remain open-minded to revisions.

Compared to Earth, Mars is small, cold, dry, and lifeless. But 3.4 billion years ago, a killer asteroid caused a Martian megatsunami.

Lots of people have seen lots of bizarre events and phenomena that defy our conventional experience. But is there a scientific explanation?

Red dwarf stars were supposed to be inhospitable. But TOI-700, now with at least two potentially habitable worlds, is quite the exception.

Venus has far more carbon dioxide in its atmosphere than Earth, which turned our sister planet into an inferno. But how did it get there?

New mathematics have shown that lines of energy can be used to describe the universe.

Creating an afterlife—or a simulation of one—would take vast amounts of energy. Some scientists think the best way to capture that energy is by building megastructures around stars.