NASA's New Horizons spacecraft has found two odd pairs of asteroids

Artists impression of New Horizons spacecraft, Kuiper belt object JHUAPL/SwRI
Two pairs of small asteroids, called tight twins, were spotted by the New Horizons spacecraft at the outer edges our cosmic neighborhood. These objects could help us understand the formation of planets in the early solar system.

These asteroids' members are so close together, that it is impossible to tell from an Earth-based telescope that they are two separate objects.

These observations were made by pressing the highest resolution camera on the spacecraft.