Errant Jupiter and Venus

25 Aug 2020

Robert sent in this link and added, it seems that when Velikosky suggested Venus and Mars may have had errant orbits that was inadmissable but here we have a mainstream article that actually claims Jupiter was situated in the inner solar  system for a good while and during its transition to its present orbit it caused Venus problems. At www.universetoday.com/147535/did-jupiter-push-venus-into-a-runaway-green... .... which concerns the proverbial mystery - why is Venus so different to the earth? Some people may say that it is because Venus is young and the raging volcanism on the surface is in some ways proof of that. However, to better understand the differences we need to know how it was formed, as it is today. A new study claims Venus may have had liquid water on its surface as little as one billion years ago. Yes, just one billion years ago. Far enough away so as not to upset the gradualist model. A contributive factor to the loss of water might well be Jupiter. Fair enough but they go on to say that Jupiter may have migrated to its present orbit from a position much closer to the Sun. Presumably closer than Venus. Two theories on how that came about are offered by other researchers and it is those studies that this one seeks to back up, or rather, to see if they might be valid. Taking a cue from them the new study, being highly curious, decided to simulate (model) the change in position of Jupiter and how it might have affected Venus (the planet that really interests them). They modelled hundreds of different migration paths, and surprisingly, in some of these, Venus was flung out of the solar system. Obviously, that was not the answer they wanted as all they were interested in was the current state of Venus and how it got to be incredibly hot. These simulations were ignored and other simulations seemed to suggest a high eccentricity which is opposite to the low eccentricty of Venus nowadays. Did they box themselves into a corner as at that point they needed to explain how Venus switched from high to low eccentricity. It is at this point they came up with the idea of liquid water on Venus. Water, apparently, can alter orbital eccentricity. This can only occur over a very long period of time, via tidal dissipation. This was followed by what can only be called a bonus. Tidal dissipation can potentially cause runaway greenhouse warming on a planet. This is the mainstream explanation for the very hot nature of the planet, even after the discovery of extensive volcanism. Mainstream theories are very difficult to dislodge, even when they are daft. The researchers then saw no problem for a young Venus possessing plenty of liquid water as it was only when Jupiter decided to move position that a problem was created. In effect, they are saying that Venus, where it now orbits, should have a more agreeable climate. Warmer than the earth but not over hot. Rather, they found orbital eccentricity can  make water disappear. Are you keeping up? This is a two step process. Significant seasonal changes cause water to freeze or turn into snow, and two, UV light can split water into molecules, leaving only hydrogen - which is light and easily lost from the atmosphere by the action of the solar wind. Water vapour ejected into the atmosphere represents a more effective greenhouse gas than co2. Oh Dear, Carl Sagan looking down from upstairs (or is he peering up from underneath) won't like that, turning upside down his theory of the hot nature of Venus. Various other processes are mentioned but you can get the gist. They end up proving to themselves the original eccentricity was high but it was water that created the modern low eccentricity of Venus. Amazing models and amazing thinking. Out of the box if you like, but very refreshing.

See also https://phys.org/news/2020-08-jupiter-venus-runaway-greenhouse.html ... there are actually other potential reasons for the dampening of the eccentricity other than water. One of which is earth itself. Periodic changes in the earth's orbital parameters, the Milankovitch theory, may have had a dampening effect on Venus. The kinetic energy that would have been removed from Venus orbital pattern would have been absorbed by the earth - resulting in skewed Milankovitch cycles. There is currently no data to support this idea as we are at one billion years ago. The simulations seem to come up with some interesting results. However, all these nuances are irrelevant without a migration of Jupiter in the first place.

Other stories concerning the sky and universe are at https://phys.org/news/2020-08-asteroid-vp-earth.html ... which is more on the asteroid that will have an encounter with the earth on November 2nd. Apparently, the asteroid crosses earth's orbit once every two years. If it misses this time it has a chance again, on a regular basis.

At www.thunderbolts.info/wp/2020/08/17/goddess-of-dawn/ ... which concerns Auroara Borealis, the northern lights. Earth's magnetic field contains the magnetotail (a plasma tail) extending over a great distance from the planet itself, but always pointing away from the sun. Solar wind ions follow earth's magnetic field down into the poles causing atmospheric molecules to emit light. Coloured light. Red from oxygen up high and green for oxygen lower in the atmosphere. Blue for nitrogen. Auroral substorms are knots of electromagnetic energy (plasmoids) that move in conjunction with plasma jets moving through the magnetotail. In EU theory electric charge separation occurs in the upper atmosphere as a result of tidal winds blowing ionospheric plasma against earth's magentic field, inducing powerful electric fields to form etc.