DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - Alien earths could form... planet formation

**Vikonbarius** · 06-14-2012, 04:53 PM

That's a good use of data from the Kepler spacecraft.

> Their discovery supports the "core accretion" model of planet formation. In this model, primordial dust accumulates into mile-sized planetesimals that then coalesce into full-fledged planets. The largest, weighing 10 times Earth, can then gather surrounding hydrogen and become a gas giant.

Yes. That's the standard model.

> A gas giant's core must form quickly since hydrogen in the protoplanetary disk dissipates rapidly, swept away by stellar winds in just a few million years.

Good point.

06-14-2012, 04:53 PM	#2
Vikonbarius Join Date Oct 2005 Posts 433 Senior Member	That's a good use of data from the Kepler spacecraft. > Their discovery supports the "core accretion" model of planet formation. In this model, primordial dust accumulates into mile-sized planetesimals that then coalesce into full-fledged planets. The largest, weighing 10 times Earth, can then gather surrounding hydrogen and become a gas giant. Yes. That's the standard model. > A gas giant's core must form quickly since hydrogen in the protoplanetary disk dissipates rapidly, swept away by stellar winds in just a few million years. Good point.
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