For the first time, astronomers have spotted a rapidly spinning neutron star that is gravitationally bound to a helium star ...

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

Theoretically, a star can travel within another star without the two merging. Now an example may have been discovered for the ...

A spinning neutron star orbits the remnants of a once-massive companion it has stripped to its core.

A team of Chinese scientists has discovered an extremely rare pulsar that gets partially blocked by its companion star every ...