Astronomers may have discovered a rare type of binary star system, where one star used to orbit inside its partner.

Astronomers in China have observed a pulsar that becomes partially eclipsed by an orbiting companion star every few hours.

Binary neutron star mergers, cosmic collisions between two very dense stellar remnants made up predominantly of neutrons, ...

Earth could be thrown off its orbit either into another planet or the sun, new research has warned. New research from Durham ...

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 ...

Get Instant Summarized Text (Gist) A binary star system has been identified consisting of a millisecond pulsar and a helium-rich companion star with a mass between 1 and 1.6 M ☉.The two stars ...

The never-before-seen "nova," dubbed V462 Lupi, recently appeared in the constellation Lupus, after suddenly becoming 4 ...

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 ...

The lone planet confirmed to be in the system is squeezed in between the two, orbiting at a distance similar to Earth's distance from the Sun. And, as an added bonus, the planet is orbiting backward ...

In this process, the gravitational pull of a second star in a binary system slowly disturbs the orbits of planets around the ...

More information: Ho Wan Cheng et al, A retrograde planet in a tight binary star system with a white dwarf, Nature (2025). DOI: 10.1038/s41586-025-09006-x Kendall Sullivan, Dying stars give a ...