A massive neutron star discovered weighs more than 2 times the mass of our sun, but is only 18 miles wide.

For the first time, astronomers have spotted a rapidly spinning neutron star that is gravitationally bound to a helium star companion. The discovery of this unusual binary system helps confirm a ...

Astronomers have identified a rare type of binary star system containing a rapidly spinning millisecond pulsar and a helium star companion, formed via common envelope evolution. Although such ...

Observations of a pulsar, consisting of a dead star spinning 600 times a second, and feasting on a stellar companion reveal the source powering its emissions.

A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

Merging neutron stars are excellent targets for multi-messenger astronomy. This modern and still very young method of astrophysics coordinates observations of the various signals from one and the ...

Dr. Universe: What would happen if you put a baseball-sized piece of neutron star on the Earth? Would it fall to the core of the Earth and become part of the core or pass through the Earth ...

Image: Elias Most/Caltech In a follow-up simulation, the team modeled what happens as the black hole swallows the neutron star, and it’s even more intense than those gigantic tremors.

Binary neutron star mergers, cosmic collisions between two very dense stellar remnants made up predominantly of neutrons, have been the topic of numerous astrophysics studies due to their ...