New Horizons team uncovers a critical piece of the planetary formation puzzle

ScienceDaily | Feb 14, 2020 at 7:17 AM
  • The New Horizons spacecraft flew past the ancient Kuiper Belt object Arrokoth (2014 MU69) on Jan. 1, 2019, providing humankind’s first close-up look at one of the icy remnants of solar system formation in the vast region beyond the orbit of Neptune.
  • Unlike the high-speed collisions between planetesimals in hierarchical accretion, in particle-cloud collapse, particles merge gently, slowly growing larger.
  • The Marshall Space Flight Center Planetary Management Office provides the NASA oversight for the New Horizons.