Close-up of a two-star system consisting of a main sequence star and a dwarf star. The dwarf star is stealing matter from the main sequence star via an accretion disk that orbits around this star at high speeds. The image is an artist’s impression of such a system.
Many of the stars in our Milky Way are part of binary systems. A good percentage of these systems are composed of two stars that orbit each other at a certain distance, but there are other binaries where both of the stars are so close that we can say they almost touch each other. #AstroSci 1/13