Three articles published in the journal “Science” report various aspects of a research on the origins and characteristics of Arrokoth, the Kuiper Belt object classified as 2014 MU69 and for some time known by the nickname Ultima Thule. Different teams of researchers with various members in common used data collected by NASA’s New Horizons space probe to study it from various points of view. One of the conclusions concerns its origin, which might have occurred following the collapse of a cloud of solid particles in the primordial solar nebula and not following the process known as hierarchical accretion, a process that has high-speed collisions between planetesimals.