Milky Way is the galaxy which contains our Solar system. The term “milky” is derived from its appearance on Earth. It is seen as a band of light from the stars which cannot be distinguished by a naked eye. Many are studying the origin of Milky Way. And astrophysicists of North Western University have succeeded in it. The study was published by Monthly Notices of the Royal Astronomical Society on July 26th 2017. In a first of its kind analysis, the Northwestern University astrophysicists have discovered that up to half of the matter of the Milky Way may come from another galaxy. As a result each of us may be part of some other galaxy. Like Aliens! The research was carried out by using supercomputer stimulation. Using these stimulations, astrophysicists found out how every galaxy, like our own get their matter: through intergalactic transfer. Intergalactic means existing or occurring between two or more galaxies. This transfer may take pl...