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Shouldn't Venus's immensely thick atmosphere be mentioned? One of the reasons for the lack of impact craters is the fact that bolides tend to break up very high up in its atmosphere, where a runaway greenhouse effect has resulted in the planet being so hot that lead would melt on its surface. [[User:Darkmind1970|Darkmind1970]] 09:18, 14 March 2008 (EDT)
Shouldn't Venus's immensely thick atmosphere be mentioned? One of the reasons for the lack of impact craters is the fact that bolides tend to break up very high up in its atmosphere, where a runaway greenhouse effect has resulted in the planet being so hot that lead would melt on its surface. [[User:Darkmind1970|Darkmind1970]] 09:18, 14 March 2008 (EDT)
:Do you have a citation for that? That's an interesting theory, certainly. It wouldn't by itself suffice to prove [[uniformitarianism|uniformitarian]] theories about meteoric bombardment, but it might explain why a [[catastrophism|catastrophic]] bombardment did not scar Venus as throughly as it did the [[Moon]]. But I'd still like to know who proposed that theory, so that I can look up what, precisely, that particular astronomer said.--[[User:TerryH|TerryH]]<sup>[[User talk:TerryH|Talk]]</sup> 10:46, 14 March 2008 (EDT)