X-ray-spewing massive stellar pairings provide a look into the Milky Way's past.

A group of astronomers discovered that the leading edge of a spiral arm or the edges of open clusters are where massive binary star systems in the galaxy develop.

the movements of 26 HMXBs with the Gaia satellite telescope operated by the European Space Agency.

The remnants of binary star systems in which one star underwent a supernova explosion and later transformed into a black hole or neutron star are known as HMXBs.

In binary systems, many stars are born, and occasionally those two stars will each be several times as massive as the sun.

The explosion leaves a compact object like a neutron star or black hole.

 The companion star will then start to lose mass to its dead and now very dense partner,

The short life of an HMXB also means that they will be concentrated in certain regions

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