Neutron stars are the crushed remains of massive stars, packed into spheres only a few miles across—but heavier than the Sun. Their density is so extreme that a single teaspoon of neutron-star matter ...

The first generation of stars that were born in the universe are a mystery. We can estimate when they existed and even how big they might have gotten, but direct evidence has been lacking. Now, JWST ...

On Christmas Day 2021, alongside other astronomers, I watched the James Webb Space Telescope (JWST) launch from French Guiana and begin its month-long journey to its destination, 1.5 million ...

They shaped the Universe, yet the first stars ever born continue to evade the searches of astronomers like Dr Emma Chapman ...

Astronomers have announced a candidate for the universe's first generation of stars. While sifting through observations of the earliest known galaxies, they flagged one small dwarf galaxy, ...

There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the width of the sun. If it were placed in our solar system, it would stretch to ...

"We studied the last several orbits before the merger, when the entwined magnetic fields undergo rapid and dramatic changes, ...

From degeneracy to galactic archaeology, white dwarfs are helping scientists make sense of some of the universe's burning ...

JWST has revealed a strange early universe filled with ultra-bright “blue monster” galaxies, mysterious “little red dots,” ...