When is a Water World not a Water World?

[Nick Sticks]

Question: When is a Water World not a Water World?
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Answer: When it's a rocky world with an atmosphere of 100% water.
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Semantics, but is there a difference?
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The outer 6 worlds were all the same:
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[rennarda]

Hmm.

It bugs me that water worlds don't show cloud patterns - in reality they would probably have very dense cloud cover because of all that water in the atmosphere!

 

[Miklos Atreides]

I can't see a waterworld here. Its atmosphere is made from water, even if I wounder atmosphere exists at all of this type.
0.5 atmospheres on a tiny 0.12G 1000km body with > 200°C temperature. Hot piece of planetary body. There is nothing impossible in space.

Regards,
Miklos

 

[Nick Sticks]

I can't see a waterworld here. Its atmosphere is made from water, even if I wounder atmosphere exists at all of this type.
0.5 atmospheres on a tiny 0.12G 1000km body with > 200°C temperature. Hot piece of planetary body. There is nothing impossible in space.

Regards,
Miklos

These are the things I like to know.
To me, 100% water means just that.
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[Farmboy]

I suspect the primary requirement for a water world is that there be _liquid_ water on it. Water vapour atmosphere or iceballs don't count.

 

[Nick Sticks]

Hmm.

It bugs me that water worlds don't show cloud patterns - in reality they would probably have very dense cloud cover because of all that water in the atmosphere!

Do you mean like this or even more cloud?
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[Lightspeed]

An interesting concept that you have uncovered. Is it physically possible?

Well, maybe, because it has been proposed in the past as a possibility by some scientists who suggested that, before Noah's Flood, Planet Earth was surrounded by an atmospheric layer that was full of water. It protected inhabitants from harsh radiation from the sun.

When the Flood occurred, this water canopy collapsed and the protective shield was removed. Hence inhabitants of Earth now live ''only'' to 70 years, and not 700 previously. (The lifetimes recorded in the Bible for people before the Flood was approximately 10 times longer than after).

Maybe the Stellar Forge is saying, yes, some circumstances make this possible.

 

[DannyLeigh]

Really interesting world. You should post it on the tourist destinations thread!

 

[AJW]

An interesting concept that you have uncovered. Is it physically possible?

Well, maybe, because it has been proposed in the past as a possibility by some scientists who suggested that, before Noah's Flood, Planet Earth was surrounded by an atmospheric layer that was full of water. It protected inhabitants from harsh radiation from the sun.

When the Flood occurred, this water canopy collapsed and the protective shield was removed. Hence inhabitants of Earth now live ''only'' to 70 years, and not 700 previously. (The lifetimes recorded in the Bible for people before the Flood was approximately 10 times longer than after).

Maybe the Stellar Forge is saying, yes, some circumstances make this possible.

It may have been proposed by 'some scientists', but it isn't science. Not remotely.

 

[StiTch]

Question: When is a Water World not a Water World?

EDIT: Speculation time - perhaps atmospheric landings have been taking so long because in light of this information, we also need to be able to transform into submarines...

Bond, eat yer heart out!

 

[Ydiss]

This topic came up a couple years ago.

An atmosphere is a gaseous state surrounding a body. That volume of gas can be 100% h2o (no other elements) but still a gas. Whereas a water world is covered by h20 in a liquid state (and the atmosphere may or may not be 100% h2o).

That is my take on it, anyway.

 

[Nick Sticks]

This topic came up a couple years ago.

An atmosphere is a gaseous state surrounding a body. That volume of gas can be 100% h2o (no other elements) but still a gas. Whereas a water world is covered by h20 in a liquid state (and the atmosphere may or may not be 100% h2o).

That is my take on it, anyway.

That does make sense, putting it like that.
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- - - Updated - - -

Really interesting world. You should post it on the tourist destinations thread!

Only once it's got my name on it!
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[babelfisch]

An interesting concept that you have uncovered. Is it physically possible?

Well, maybe, because it has been proposed in the past as a possibility by some scientists who suggested that, before Noah's Flood, Planet Earth was surrounded by an atmospheric layer that was full of water. It protected inhabitants from harsh radiation from the sun.

When the Flood occurred, this water canopy collapsed and the protective shield was removed. Hence inhabitants of Earth now live ''only'' to 70 years, and not 700 previously. (The lifetimes recorded in the Bible for people before the Flood was approximately 10 times longer than after).

Maybe the Stellar Forge is saying, yes, some circumstances make this possible.

How serious is this science?

 

[Nick Sticks]

Somebody else recently posted something similar:
https://forums.frontier.co.uk/showthread.php/306483-Odd-things-you-see-exploring
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So there are more similar planets around.
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[trollson]

A Water World isn't simply a terrestrial world with 100% surface water.

Its a body in which the bulk of the mass is water, with a small rocky core (optional). So you don't, for example, get small bits if land poking through - because the oceans go "all the way down".

Think more like the structure of a gas giant than the earth.

So you can still have a terrestrial world with 100% oceans that is not a water world, or with water based atmosphere (subject to temperature and pressure) - as these are just surface features not the composition of the body.

 

[Luniticisi]

When it's a Walter world.

 

[Nick Sticks]

A Water World isn't simply a terrestrial world with 100% surface water.

Its a body in which the bulk of the mass is water, with a small rocky core (optional). So you don't, for example, get small bits if land poking through - because the oceans go "all the way down".

Think more like the structure of a gas giant than the earth.

So you can still have a terrestrial world with 100% oceans that is not a water world, or with water based atmosphere (subject to temperature and pressure) - as these are just surface features not the composition of the body.

Are you sure?
I have plenty of pictures of planets designated as Water Worlds with what looks like land or islands.
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[DrakeAurum]

Does it feature Kevin Costner in a discount Mad Max outfit? If not, it isn't a proper Water World.