In the summer of 1989, the first binary asteroid (RW 1989) was discovered, consisting of two almost spherical bodies 750 m in diameter, rotating as a whole. In August 1993, the Galileo spacecraft discovered a satellite with a diameter of 1.5 km near the asteroid Ida. Other paired asteroids have been found.
Such objects are formed either in collisions of asteroids, or as a result of the long-term proximity of two independent bodies in similar orbits.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.