Expert Voices

A newfound star in a nearby galaxy appears to have cheated death by blowing up at least twice as a supernova. It could be a throwback to the first stars that ever formed.

Ultradense quark stars, which mash together one of the universe's fundamental particles, may or may not be a physical possibility.

We all know about powerful supernova blasts — but compared to quasars and their brighter cousins, blazars, they're peanuts.

In the late 1990s, theoretical physicists uncovered a remarkable connection between two seemingly unrelated concepts in theoretical physics.

"Kilopower" could help humanity establish settlements on the moon, Mars and other bodies throughout the solar system.

Gamma ray bursts, intense explosions of light, are the brightest events ever observed in the universe – lasting no longer than seconds or minutes.

One of the highlights of 2017 was the discovery of the first object in our solar system that definitely came from somewhere else.

Jumping into the world of astronomy and physics as a career can seem daunting, especially for precocious high schoolers with a passion for the field.

People have been dreaming about space travel for hundreds of years, long before the arrival of the spectacular technologies behind space exploration today.

It must be lonely traveling out beyond the edge of the solar system.

You would think that electrons would be easy enough to describe — but a quantum-mechanical property called "spin" makes that task much less straightforward.