The Cool early Earth (CEE) theory posits that the early planet Earth had a calm influx of bolides and a cool climate allowing fluid water, after the planetary accretion but before the occurrence of the Late Heavy Bombardment in the Hadean geological eon. The Cool Early Earth is believed to have been the state for some hundreds of million years around 4.2 billion years (Ga) ago. This Cool Early Earth theory is supported by supposed water conditions at the creation of detrital zircon at Jack Hills in Western Australia, dated to about 4.0–4.4 Ga ago, some time after the planetary accretion era of the early Hadean. The Cool Early Earth was immediately followed by the Late Heavy Bombardment.
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Famous quotes containing the words cool, early and/or earth:
“In my skull,
from which vision took flight,
will come wine
will pour song
of the cool night.”
—Hilda Doolittle (1886–1961)
“At the earliest ending of winter,
In March, a scrawny cry from outside
Seemed like a sound in his mind.
He knew that he heard it,
A bird’s cry, at daylight or before,
In the early March wind.”
—Wallace Stevens (1879–1955)
“Well said, old mole, canst work i’ th’ earth so fast?”
—William Shakespeare (1564–1616)