Figure E2 ICES

Still backward run the clock, until we see

(In inward vision of the heavens past)

A maelstrom of nebulosity

Around the infant Sun. Revolving fast,

The inner circle, subject to the blast

Of newborn light, too hot for ice to form:

Outwards, frosty fragments form the vast

Gas giants: ’twixt them, planetesimals swarm.

The FROST-LINE great from small partitions, cool from warm.