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The study used computer simulations to show that a slowly rotating planet with the same atmospheric composition, mass, and radius of the Earth could potentially be habitable even at Venus' distance from the Sun. Under the typical boundaries of a habitable zone, Venus is situated closer to the Sun than the inner edge of the zone. In the study, the simulated planet received almost twice as much radiation as the actual Earth did, and yet the surface temperature was cool enough for life to thrive due to the shielding clouds.
"Rotation can have a huge effect, and lots of planets that we previously thought were definitely not habitable now can be considered as candidates," says Dorian Abbot of the University of Chicago, and a co-author on the paper.
originally posted by: LABTECH767
a reply to: stormbringer1701
This is merely a simulation and probably wrong, it does not take into account internal planetary heat either.
Venus probably had ocean's at the earliest point and may have been cooler but even then they were boiling, it has two continent's and large ocean basins and is techtonically active with a very similar form but slightly smaller than the earth.
Cool Thread but I think without taking into account planatery heat from it's core and the inability to radiate it with the same efficiancy over time the Earth would cook itself in that orbit to become a slightly larger version of venus.
actually both are actually more habitable that is generally assumed for a variety of reasons. Mar's biggest hit on habitability isn't it's atmosphere or its temperature range. it's the gravity.
originally posted by: blacktie
that would really be awesome if Venus and Mars were more similar to Earth than we think
If, on the other hand, the planet is a slow rotator, then the Hadley cells can expand to encompass the entire world. This is because the atmospheric circulation is enhanced due to the difference in temperature between the day and night side of the planet. The days and nights are very long, so that the half of the planet that is bathed in light from the star has plenty of time to soak up the Sun. In contrast, the night side of the planet is much cooler, as it has been shaded from the star for some time.
originally posted by: stormbringer1701
eh the server says the original post is over 4 hours old so i cannot edit it. that's wrong. but there is nothing i can do.
these things are hypothetical exercises. no one thinks anything is heading our way. but since we have no ideas on how to move a planet around they propose something like Cern though i must have missed that part.
originally posted by: Unity_99
So they want to use Cern to move earth? Whats heading our way?
if it is then in less than 500K years it will be cooled down to habitabile levels. but we know that the atmosphere and lack of an ocean will prevent that. however; it takes a surprisingly short amount of time for a planet to go from molten to rocky crust and liquid to solid to plastic interior like earth did. we are watching planets in planetary nebulae do it now. i mean one at this stage here or that later stage there and so on. planets form two ways. and one is stately and slow and the other is more like "whoomp! There it is!" you can have a slow particle by particle accretion or you can have a rapid gravitational coalescence.
originally posted by: bigspud
a reply to: stormbringer1701
what if venus high surface temp is from internal heating and not solar.
It is hypothesized that Venus underwent some sort of global resurfacing about 300–500 million years ago...