Is it possible that Venus was an earthlike planet a long time ago and has fallen victim to global warming?

Question

Is it possible that Venus was an earthlike planet a long time ago and has fallen victim to global warming?

Answer 1

yes

Answer 2

I think it's "global warming" would be it's proximity to the Sun. As the 2nd planet from the sun, with it's tight orbit to the Sun, I doubt any life could survive the heat. At least with the same relative carbon make up as we enjoy here on Earth

Answer 3

It was probably never earthlike. It does have a runaway greenhouse effect, where a negative feedback loop prevents liquid water from forming, which is how CO2 could be removed from the atmosphere.

Answer 4

I thought NASA was actively looking into that very concept.

I know someone did the math and found that the atmosphereic pressure and contents on Venus are very close to what they figured out Earth would have if greenhouse effects went so far as to boil away the oceans and remove the gases out of the rocks.

Answer 5

Since none of us were here to see it happen....anything is possible.

You think big!  Have a star!

Answer 6

Global warming is a myth designed to make us pay more taxes and to scare us into electing certain politicians to places of power

Answer 7

Not really, if you mean than some intelligent life caused the global warming. First, global warming, even though it poses serious threats to our planet, is only expected to raise average temperatures by a few degrees, and the surface temperature on Venus is roughly 500C (932F), so whatever intelligence was on the planet would have died off long before Venus warmed by that much. But if you're asking whether natural factors caused the temperature increase, like intense volcanic activity releasing carbon dioxide into the atmosphere, then I guess it's entirely possible that temperatures where much lower before. In fact, the reason Venus is so warm is mainly because of greenhouse gases (the atmosphere is about 92% CO2 and the atmospheric pressure is something like 100 times greater than on Earth).

Answer 8

In their earliest stages, Venus and Earth might have resembled each other more than they do now. However, given its proximity to the Sun, it was unlikely for Venus to ever develop the same way Earth did and reach a temperature low enough for our kind of life to survive there. It is highly unlikely that any intelligent civilization ever arose there, or that the current condition of Venus's atmosphere was a direct result of any interference by any intelligent civilization.

Answer 9

That is the actual theory about Venus right now. It is thought that it had an extreme global warming where it went crazy and evaporated the water.

Answer 10

sure why not? it sounds possible to me

Answer 11

You never know, but I doubt it.

Answer 12

No.

Venus is to close to the Sun (roughly 67,000,000 miles) to have ever been Earthlike (Earth is 93,000,000 Miles from the Sun on average).

This closerness to the Sun results in a surface temperature of 867 Degrees F which as you can see is way over the boiling temperature of 212 Degrees F on Earth under an atmospheric pressure of 14 PSI.

What is even worse for considerations of the possible EARTH-LIKE-NESS of Venus, is that

the planet spins so slowly that one day on Venus

takes 243 Earth Days...

so nights on Venus would be 121 Earth Days long,

and Days would be 121 Earth days long.

Even if the temperatures were of a reasonable nature,

plants could not survive an entire summers length with

no sunlight (121 earth days of darkness) and would

more than likely burn up in 121 days of direct sunlight.

No mention of flowing bodies of water have ever been

made in reference to Venus...Of course, at 867 Degrees

F, any water would have turned into steam long ago.    

Also, Venus has a smaller mass than Earth, and, therefore, less gravity. For that reason, it canot retain all

of the necessary gases necessary to form a viable atmosphere. The atmosphere that it does have is composed of carbon dioxide, with some nitrogen and other trace gases.

Violent storms apparently rage on the surface and high velocity winds circle the planet within 4 days.

The surface of Venus is hard, crusty, and covered with hundreds of volcanos, some of which are still active. Venus also spins in the opposite direction from the rotation of all the other planets. So...there are a lot of things about Venus which differ from our Earth and make comparisons such as yours rather hard to make.

Answer 13

No, that´s not possible. There is neither water nor oxygen on Venus and it rains sulfuric acid.

Answer 14

I'm not sure what you are asking.  Probably Venus has not always been exactly as it is now, just as the Earth is not.  We have had wildly different climates over the millennia - just think of the ice ages, and meteoric and volcanic winters, and the Jurassic period when CO2 was 4 times higher than it is now.

However, global warming on earth is presumed to be caused by the burning of fossil fuels.  That didn't happen on Venus, in case you were wondering.

Answer 15

Venus is a result of a runaway greenhouse effect.  Assume that it was once earth-like.  As some CO2 went into the atmosphere it became a little warmer.  The extra heat caused even more CO2 to be released, which warmed it further, causing more CO2 to leak into the atmosphere, etc.  Venus now has about as much CO2 in its atmosphere as the earth would if it was all boiled out of its lithosphere.  The earth has been much hotter in the past than it is today, however, so there must be some threshold temperature that a runaway greenhouse effect becomes irreversible.  And being closer to the sun doesn't help Venus.

Answer 16

yes, scary concept, huh???

Answer 17

That is a terrrific Q guy , hey it is possible you never know I am going too look deeper into that I will get back too you once again great Q.

Answer 18

it could be possible.

h**l, anything is possible!

even Scientology is possible.

there are no boundaries to the theories about space. we know so little about it. there is little known fact so all there is room for is theories of what it is/was like.

anyone can make up a theory. it becomes a fact when you have evidence. just remember that theories are not all truths.

Answer 19

Put me in the "Yes - Possible" category.