What physical accounting did later scientists provide that was largely missing or unspecified in Kant's 1755 formulation?

Answer

A complete physical accounting for angular momentum distribution

What Kant lacked, which later scientists provided, was a complete physical accounting for angular momentum, especially why the Sun holds so little of the total angular momentum.

What physical accounting did later scientists provide that was largely missing or unspecified in Kant's 1755 formulation?
astronomynebulahypothesisphilosopherKant