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Lengths of Day, Orbit of Venus, Planetary Rotation

25 January 2013

Tall Bloke's Talk Shop has an interesting series by Tim Cullen (retired and living in Malaga) – go to http://tallbloke.wordpress.com/2013/01/24/tim-cullen-planetary-rotation-… and http://tallbloke.wordpress.com/2013/01/23/tim-cullen-planetary-rotation-… … in which the piece concerning Venus might tempt the taste buds of SIS members. Venus appears to rotate very slowly – in the opposite direction to the general rotation of the solar system. However, it is thought the upper atmosphere is super rotating and according to mainstream transfers momentum downwards towards the surface. This top down transfer in momentum is creatively explained away – but how does it affect the surface of Venus, estimated to be around 460 degrees C. Venus apparently receives less solar radiation than the Earth due to its thick and dense cloud cover which reflects most of it back.

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