EASC 108 Lecture Notes - Lecture 11: Ovda Regio, Mass Wasting, Viscosity
29 Mar 2017
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Intense cloud cover highly reflective in visible light ( >70%: surface unseen except by radar. Venus & earth almost same size and density. Venus" shorter orbital period is in line with it"s smaller orbit around sun. Venus" rotation period on its axis is 243 earth days, longer than its year of 224. Venus rotates in a retrograde direction, opposite to its orbital motion. Rotational, orbital revolution direction is same for almost all planets: exceptions; venus, neptune, pluto. Shows how the debris disk formed planets around the proto-sun". 1 possibility: impact of huge planetesimal knocked planet into retrograde rotation. Formed in a similar location (0. 72 au: implies a similar bulk composition, earth"s carbon is mostly locked up in limestone, venusian carbon mostly locked up in atmospheric. Earth has obvious topographic dichotomy: high continents, low ocean floors. Surface history of venus is only available from ~1ga onward (not dissimilar to.
