Neptune the ocean planet

[NomadicSky]

What if Venus was coverd with water give the planet a more earthlike atmosphere and rotation but cover all of the planet with an ocean. With the ocean Venus is blue so I'm guessing it might be named Neptune and not Venus.

[Forum Lurker]

Venus has been named after fertility goddesses in many cultures in the Mediterranean; I don't know if a color change would alter this, given that a sea deity already has a convenient place to direct worship.

[Rabbit Scribe]

What if Venus was coverd with water give the planet a more earthlike atmosphere and rotation but cover all of the planet with an ocean. With the ocean Venus is blue so I'm guessing it might be named Neptune and not Venus.

The water would all boil away in about eleven seconds, right? 850 degrees F/ 460 degrees C is a tad warmish...

[NomadicSky]

It wouldn't if Venus had an earthlike atmosphere.

[Forum Lurker]

According to the Wiki, Venus' air temp would probably be roughly at the boiling point were it not for the high CO2 concentrations. With an Earthlike starting atmosphere and a satellite to provide tectonic activity, it'd have substantial liquid water on the night side and non-trivial liquid water, if obscured by heavy cloud formations, on the day side.

[NomadicSky]

That would be a very similar earth & moon system
And this is just what if but I was reading this (http://www.astronomynotes.com/solarsys/s9.htm)
Venus is about 95% the size of the Earth and has 82% of the Earth's mass. Like the Earth, Venus has a rocky crust and iron-nickel core...
Venus was originally cooler than what it is now and it had a greater abundance of water several billion years ago. Also, most of its carbon dioxide was locked up in the rocks. Through a process called a runaway greenhouse, Venus heated up to its present blistering hot level. Because Venus was slightly closer to the Sun than the Earth, its water never liquified and remained in the atmosphere to start the greenhouse heating. As Venus heated up, some of the carbon dioxide in the rocks was ``baked out.'' The increase of atmospheric carbon dioxide enhanced the greenhouse heating. That baked more carbon dioxide out of the rocks (as well as any water) and a runaway feedback loop process occurred. This feedback loop occurred several billion years ago so Venus has been very hot for several billion years. The water Venus originally had is now gone because of a process called dissociation.
Venus' water was always in the gaseous form and could reach high enough in the atmosphere for ultraviolet light from the Sun to hit it. Ultraviolet light is energetic enough to break apart, or dissociate, water molecules into hydrogen and oxygen. The very light hydrogen atoms were able to escape into space and the heavier oxygen atoms combined with other atoms. Venus' water was eventually zapped away. The Earth's ozone layer prevents the same thing from happening to the water here.

What if billions of years ago Mercury was it's moon and switch the orbits of Mars and Venus leave Mercury it's moon
Would Venus be an earth like world?

Wouldn't Mars have no atmosphere in this timeline as well because it would have been blown away by the sun?

Can these changes in our solar system change life on earth as well?

[Aldroud]

This porridge is too hot Venus
This porridge is too cold Mars
But THIS porridge is just right Earth

But who's to say we can't fix that, right?

Mars needs thicker atmosphere and water. Use comets to smash into the planet to thicken the air and build a solar mirror to increase the amount of solar radiation and heat it up. I've seen a globe of a terraformed Mars, most of the northern pole is the great north sea.

Venus needs a sun shade. A giant mylar shield, balanced at the L1 point (between Venus and Sun) that keeps the planet in darkness. The planet will cool over a period of a thousand years to point lichens can be introduced to lock the carbon out of the atmosphere. A little bit of tinkering and you can start terraforming Venus.

Even the moon could be terraformed. Put it inside a giant mylar bag to help retain atmosphere. Spin it up and add bulk atmosphere first by using comets striking at an angle to get it rotating faster.

Ahh, now what could we do with four planets instead of one?

[Rabbit Scribe]

This porridge is too hot Venus
This porridge is too cold Mars
But THIS porridge is just right Earth

But who's to say we can't fix that, right?

Mars needs thicker atmosphere and water. Use comets to smash into the planet to thicken the air and build a solar mirror to increase the amount of solar radiation and heat it up. I've seen a globe of a terraformed Mars, most of the northern pole is the great north sea.

Venus needs a sun shade. A giant mylar shield, balanced at the L1 point (between Venus and Sun) that keeps the planet in darkness. The planet will cool over a period of a thousand years to point lichens can be introduced to lock the carbon out of the atmosphere. A little bit of tinkering and you can start terraforming Venus.

Even the moon could be terraformed. Put it inside a giant mylar bag to help retain atmosphere. Spin it up and add bulk atmosphere first by using comets striking at an angle to get it rotating faster.

Ahh, now what could we do with four planets instead of one?

Sweet! :D Why is the speed of the plants' rotations so important?

[Forum Lurker]

Because if you don't have a monstrously thick atmosphere and impenetrable cloud cover, like OTL Venus, things get hotter in the day and colder at night. This means, if days are more than two hundred T-days long, things get very very hot during the day, and very very cold at night. Unsurvivable differences, and ones which fill the twilight areas with gale-force winds.

[fortyseven]

Aldroud, how can u have comet impacts if you are keeping the atmosphere in with a mylar bag?

[Zor]

Because if you don't have a monstrously thick atmosphere and impenetrable cloud cover, like OTL Venus, things get hotter in the day and colder at night. This means, if days are more than two hundred T-days long, things get very very hot during the day, and very very cold at night. Unsurvivable differences, and ones which fill the twilight areas with gale-force winds.

However, He is preposing Venus be an Ocean World. Water is an exelent storage vessle for heat (Geuss why only the top of a lake freezes over), and Tides would move water from one half to the other (think gulf stream times a hundred). Also this would be a salty ocean and salt water is far mor resistant to freezing than freesh water.

Stormy seas, yes. Unihabitable no.

Zor

[Ivan Druzhkov]

According to the Wiki, Venus' air temp would probably be roughly at the boiling point were it not for the high CO2 concentrations. With an Earthlike starting atmosphere and a satellite to provide tectonic activity, it'd have substantial liquid water on the night side and non-trivial liquid water, if obscured by heavy cloud formations, on the day side.
Don't moons also keep the axis of the planet stable? I've heard some theorizing about how planets like mars tend to "roll" their axis around in the space of a few dozen million years.

[NomadicSky]

What if billions of years ago Mercury was it's moon and switch the orbits of Mars and Venus leave Mercury it's moon
Would Venus be an earth like world?

Wouldn't Mars have no atmosphere in this timeline as well because it would have been blown away by the sun?

Can these changes in our solar system change life on earth as well?

[Forum Lurker]

However, He is preposing Venus be an Ocean World. Water is an exelent storage vessle for heat (Geuss why only the top of a lake freezes over), and Tides would move water from one half to the other (think gulf stream times a hundred). Also this would be a salty ocean and salt water is far mor resistant to freezing than freesh water.

Stormy seas, yes. Unihabitable no.

Zor

I must disagree. Even in heavily oceanic climates, there's a difference of fifteen or so degrees between daytime high and nighttime low; this is a result of a mere 24-hour heating and cooling cycle, and produces significant and constant winds. If this is increased by two full orders of magnitude, we can expect to see considerably greater differences.

[Count Dearborn]

To bad we can't cause a comet to smash into, and blow off the execess cloudcover.

[NomadicSky]

The day and nite cycle is crazy on venus

[Zor]

As i said, storms are a given factor of such a world but these would act positivly to the means of stabilizing the temperature. If in the middle of the day-side gets really hot and a lot of evaporation happens, it would do the following things...

1-Form a cloud layer that would provide shade
2-Cause cooler waters to drift in to take it's place, further cooling the area, as well as moving any frozen water towards the day side.

Also, unlike Earth, there are no massive chunks of Land to get in the way of the Currents.

Zor

[NomadicSky]

A probe is sent to orbit and map out Neptune (venus)
In this timeline Neptune (venus) has Mercury as it's moon and a similar rotation the planet has a 25 hour day.
The probe sends this back to NASA

[Nicksplace27]

Add a bit more landmass, hurricanes would just be devastating!

[NomadicSky]

Is that better

[NomadicSky]

Hurricanes will still be bad but continent is about the size of Australia i think I placed it far enough north. Will the storms still be as bad?