Sooner or later, the typical astronomy enthusiast learns a shocking truth: most star systems are double or triple, with two or three stars orbiting one another. Thus, our single Sun is in the minority. Now, however, an astronomer in Massachusetts says this "truth" is false--because most star systems in the Galaxy are in fact single.
Certainly double and triple stars seem common. Sirius, the brightest star in the night, is double, and Alpha Centauri, the nearest star system to the Sun, is triple. Furthermore, most yellow G-type stars like the Sun have stellar companions.
But Charles Lada of the Harvard-Smithsonian Center for Astrophysics says what really counts are red dwarfs--stars much fainter and cooler than the Sun--because they make up the vast majority of stars. In recent years, red dwarf surveys have found that most of these dim stars are single.