Paul Sutter

A new understanding inspired by string theory shows that our universe may be more stable than we previously thought.

Black holes go boom in several ways.

Astronomers know of only a few dozen examples of these active asteroids, but they suspect more are out there — and you can join the hunt.

A team of physicists has found that the remnant of a neutron star merger observed in 2019 has just the right mass to be a strange hypothetical quark star.

If you see a giant red star surrounded by a thick shroud of material, watch out — the star will likely explode within a few years.

Lagrange found that the difference between an object's kinetic energy and potential energy unlocked something deeply profound about the universe.

One hypothesis for the nature of dark matter is that some of it could be self-interacting, meaning the individual particles interact slightly with one another.

Scientists think that when dark photons collect around black holes, they can get trapped and boosted to high energies, where they might transform into other particles (or even just normal photons).

Astronomers hope to use pulsars scattered around the galaxy as a giant gravitational wave detector. But why do we need them, and how do they work?

Dark energy could be caused by pressure from giant voids of nothingness that may be flinging the universe apart.

New research suggests a way for black holes to merge quickly: They must be caught in the accretion disk of a supermassive companion.

It's true that the dark matter hypothesis has its shortcomings — and, of course, we haven't found any dark matter particles yet. But the truth is that the alternatives are much worse.

But could these giant, rocky planets actually sustain the conditions for life? Or is life limited to smaller planets like our own?

A new hypothesis proposes that a large fraction of dark matter may be bound up inside tight balls the size of Neptune — so-called dark matter planets.

Electrons were once thought to orbit a nucleus much as planets orbit the sun. That picture has since been obliterated by modern quantum mechanics.

New research motivated by string theory suggests possible, and equally strange, fates for evaporating black holes.

Researchers have found a new way to detect some of the most cataclysmic mergers in the universe before they happen.

Physicists have created a system of two connected time crystals, which are strange quantum systems that are stuck in an endless loop to which the normal laws of thermodynamics do not apply.

If aliens exist, they do exist, they might be hanging out on Dyson spheres circling the husks of sunlike stars called white dwarfs.

It sounds like the premise of a bad sci-fi movie: There's some mysterious entity, beyond the boundaries of our galaxy, that is pushing against us with incredible force.

Humans aren't just making Earth warmer, they are making the climate chaotic, a stark new study suggests.

Harness renewable energy to explore the cosmos or risk planetary doom, new physics study argues.