Paul Sutter

Physicists sifting through old particle accelerator data have found evidence of a highly-elusive, never-before-seen process: a so-called triangle singularity.

A new theory suggests dark matter may have come from quantum bags that got squished together in the early universe.

What are the chances that a primordial black hole forged in the earliest moments of the universe will come wandering toward Earth?

Certain weird gravity conditions would make it possible to travel through a wormhole and back.

Asteroids are packed with gold and other valuable resources. And the best way to harvest those metals may be to bring space rocks to Earth.

If we ever want to take pictures of an Earth-like exoplanet, we need to think bigger than the biggest telescopes on Earth.

On Aug. 4, 2008, the Fermi Gamma-ray Space Telescope began full science operations, scanning the entire sky through the highest-energy form of light.

The growing problem of space junk poses a risk to future space missions, but the solution isn't going to be easy.

A pair of astronomers have proposed two new strategies for preventing possible asteroid impacts.

The earliest and most momentous epoch in the history of the universe released a flood of gravitational waves, tiny ripples in the fabric of space-time.

A wild variety of star systems exist in the nearby regions of the Milky Way, and astronomers are eager to know where they might find an "Earth 2.0."

With its frigid temperatures, remoteness from the sun and general dustiness, changing Mars to be more Earth-like is more challenging than it seems (and it already seems pretty tough).

Astrophysicists say our universe might be shaped like a three-dimensional donut, meaning you could point a spaceship in one direction and eventually return to where you started.

Despite numerous attempts, astronomers have not yet confirmed the detection of an exomoon, a moon orbiting a planet around a distant star.

Theories that attempt to resolve the so-called black hole information paradox predict that black holes are much more complicated than general relativity suggests.

Dark matter could be even weirder than anyone thought, say cosmologists who are suggesting this mysterious substance could interact with itself in a higher dimensional universe.

The Dark Energy Survey just released its most comprehensive results. But did they really prove Einstein wrong?

If you'd like to "bake" a universe, you need two essential ingredients and one optional ingredient.

New research shows how a hypothetical form of dark energy might be made inside the sun and could be detected here on Earth. In fact, we may have already seen it.

The supermassive black hole in the center of our galaxy may not be a black hole at all, but rather a fluffy ball of dark matter called darkinos.

Space is big — really big. And if you want to successfully navigate the interstellar depths of our galaxy, you're going to need some sort of reliable system.

Many theories of the early universe predict that the cosmos should be flooded with cracks in space-time, called cosmic strings, but no cosmic strings have been detected yet.

For decades, cosmologists have wondered if the large-scale structure of the universe is a fractal — that is, if it looks the same no matter how large the scale.

Physicists have long been unable to describe what happened just after the Big Bang when a teensy blip ballooned into the universe, a process called inflation. We may know why.