Paul Sutter

The skies may be full of invisible "boson stars" that could have a connection to dark matter.

If parallel universes exist, can we access them? Let's explore the possibility.

Dark matter can't be too heavy or it might break our best model of the universe, new research suggests.

For decades, scientists assumed that the expansion of the universe was powered by a new entity, known as the inflaton, but new research suggests that it may have been possible without it.

Ever since the discovery of methane on Mars, scientists have wondered if the Red Planet might harbor life. Now, researchers know where to look: deep under the surface of a broad Martian plain.

Researchers have designed a flexible material that could pave the way for the development of adaptable space structures.

As black holes slowly vanish through Hawking radiation, their information may be preserved in subtle space-time ripples, a new theory suggests.

Scientists theorize there could be subatomic particles we have yet to discover. Here are five of the weirdest, rarest hypothetical particles in the universe.

One possible reason why we haven't found any intelligent life in the cosmos the Great Filter argument, which says that very few civilizations make it to the advanced spacefaring stage.

Peculiar James Webb Space Telescope observations seem to show gargantuan black holes in the earliest moments of the universe. New research may explain how they formed, thanks to primordial "seeds".

To explore the galaxy and hunt for resources, intelligent aliens might need to turn their home stars into natural spaceships, a new paper suggests. A few known star systems might fit the bill.

Giant filaments crisscross the universe, connecting galaxy clusters like superhighways between cities. But due to their complex shapes, they are stubbornly difficult to measure.

To explain why dark matter particles haven't come up in any direct detection experiments, physicists have wondered if it may be a kind of particle known as an axion.

The goal of the Parker Solar Probe mission is to investigate the mysteries of the sun's corona, its outer atmosphere. What has it learned so far?

Magnetic fields are everywhere in the universe. But where do they come from?

When stars explode as supernovas, they can cause serious cosmic carnage. Is Earth in any danger from any nearby stars?

While such organisms may or may not exist in the universe, the research has important implications for future human endeavors in space.

In 2006, the International Astronomical Union (IAU) famously demoted Pluto to a dwarf planet. Things have been a bit of a mess since then — so is it time to redefine the planet?

Space mysteries Black hole mergers are beautiful — and some of the most violent events in the cosmos. Here's how the process unfolds.

Using a phenomenon known as gravitational lensing, it might be possible to use the sun as a gigantic telescope to peer deep into space.

The cause of mysterious methane spikes on Mars may be a strange form of alien life — or it may just be interesting chemistry. Either way, something odd is happening on the Red Planet.

A long-lost moon could explain why Mars is so different from the other rocky planets in the solar system.

Every so often, astronomers detect a supernova explosion that's 100 times brighter than it should be. A new paper may reveal the strange source of these "superluminous" supernovas.

A tiny fraction of known black holes emit X-ray signals that resemble a human "heartbeat." Now, new research may finally explain the strange phenomenon.