Neutron stars are formed when massive stars "die" and their stellar cores, with masses between one and two times that of the sun, collapse to the width of just 12 miles (20 kilometers).

This neutron star is only 12 miles (20 kilometers) from end to end, yet weighs 1 1/2 times our sun. It's densely packed with little space between parts of its atoms.

Smash-ups between dead neutron stars create and trap ultrahot ghost particles called neutrinos, new simulations have shown. The discovery could help us better understand how elements like gold are ...

Astronomers have found evidence that a neutron star exists at the centre of the only exploding star – supernova – visible to the naked eye in the last 400 years, solving a 30-year-old mystery.

Northwestern University astrophysicists have helped discover a neutron star crashing into a mysterious object, which they think is one of the lightest black holes ever seen. This would change ...

A fast-spinning neutron star south of the constellation Leo is the most massive of its kind seen so far, according to new observations. The record-setting collapsed star, named PSR J0952-0607 ...

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.

Researchers at the Institut für Astronomie und Astrophysik in Germany have found evidence that suggests the extremely tiny neutron star, HESS J1731-347, may in fact be a "strange" star. In their ...

This neutron star is only 12 miles (20 kilometers) from end to end, yet weighs 1 1/2 times our sun. It’s densely packed with little space between parts of its atoms.

Scientists have confirmed what became of a star that exploded in a stunning supernova visible to Earth more than three decades ago: It morphed into a neutron star, one of the oddest objects in the ...

This neutron star is only 12 miles (20 kilometers) from end to end, yet weighs 1½ times our sun. It's densely packed with little space between parts of its atoms.