Gender binary Gender binary The gender binary, also referred to as gender binarism (sometimes shortened to just binarism), is the classification of sex and gender into two distinct, opposite and disconnected forms of masculine and feminine. Gender binary is one general type of a gender system. Sometimes in this binary model, "sex", "gender" and "sexuality" are assumed by default to align. For example, when a male is born, gender binarism assumes the male will be masculine in appearance, character traits, and behavior, including having a heterosexual attraction to females. The term "gender binary" describes the system in which a society splits its
Binary asteroid Binary asteroid A binary asteroid is a system of two asteroids orbiting their common barycenter. The binary nature of 243 Ida was discovered when the Galileo spacecraft flew by the asteroid in 1993. Since then numerous binary asteroids and several triple asteroids have been detected. The mass ratio of the two components – called the "primary" and "secondary" of a binary system – is an important characteristic. Most binary asteroids have a large mass ratio, i.e. a relatively small satellite in orbit around the main component. Systems with a small minor-planet moon – also called "companion" or simply "satellite" –