Newslink: With Ultima Thule Flyby, NASA Probe Helps Unlock Secrets of Planetary Formation

The newest snowman-like image of Ultima Thule (2014 MU69), a pristine object from the dawn of the solar system, is already revealing insights into how planets form.

https://www.space.com/42889-new-horizons-ultima-thule-flyby-planet-formation.html