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 systems ...

Older parents: Artist’s impression of a protoplanetary disc that has just formed around a binary star (left). The image on the right shows a large cavity that has been removed from the disc by a large ...

In X-Ray binary systems, a compact object (like a Black Hole, a Neutron Star or a White Dwarf) usually rotates about an optical star. An X-Ray binary with a Neutron Star as the compact object can be ...