JWST offers best glimpse ever into the icy planetesimals

New studies led by researchers at the University of Central Florida offer for the first time a clearer picture of how the outer solar system formed and evolved based on analyses of trans-Neptunian objects (TNOs) and centaurs. 

A Compelling New Hypothesis Could Finally Explain How Earth Formed

The planets in our Solar System formed progressively. Small grains grew over time into kilometer-​sized planetesimals by accumulating more and more material through their gravitational pull.