Paul Sutter

The detection of interstellar objects in the solar system has raised an interesting question: How much of the solar system is made of foreign material?

Ceres is the most dominant member of the asteroid belt but it doesn't look like the other asteroids.

A seemingly intractable black hole paradox first proposed by physicist Stephen Hawking could finally be resolved — by wormholes through space-time.

The origins of the Lagrange points are sunk deep within one of the most difficult problems faced by mathematicians and physicists over the past 400 years: the three-body problem.

If you've ever been stuck in a nightmare traffic jam, you know that "black hole from which you can never escape" captures the feeling well.

Globular clusters are like astronomical coelacanths — mysterious living fossils. These densely packed collections of ancient stars may hold the ultimate secrets to the formation of galaxies.

A recent study has found that the hazards posed by large impactors far outweighed their benefits for life on Earth.

Scientists used a 200-ton "neutrino scale" to measure the elusive particles.

Quantum mechanics tells us that the forces of nature come in discrete, tiny chunks. Gravity, the bending of space-time, is a force. So is space-time quantized as well?

You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.

Toxic hydrogen cyanide gas, used in chemical weapons today, may have been involved in the early stages of life's evolution, a new study suggests.

It's easy enough to say what a star is: one of those bright pointy things that twinkle in the night sky. But the actual definition of a star is as rich and colorful as the stars themselves.

The universe is pretty good at smashing things together. And when neutron stars do it, the collisions release a flood of elements necessary for life.

Astronomers have proposed lots of ideas to explain 'Oumuamua's odd characteristics, and we're unlikely ever to find out which one is correct.

Knowing if high-energy neutrinos and FRBs came from the same place on the sky would help explain the origins of both. But alas, they do not.

How do you test theories of the universe? By building gigantic supercomputers and simulating the evolution of the cosmos.

Does the simulation hypothesis offer a compelling argument, or is it just interesting food for thought? Let's find out.

How common are ice-covered planets like Hoth from "Star Wars," and might they be capable of hosting life? As usual, the answer is, it depends.

The Pacific Ocean Neutrino Experiment would turn a massive swath of the Pacific Ocean into nature's own neutrino detector.

Wormholes may be stable after all, a new theory suggests, contradicting previous predictions that these hypothetical shortcuts through space-time would instantly collapse.