Terraformable Earth-like?

Orvidius

Orvidius
Well this is interesting. I wanted to see what the relative numbers of terraformables were, and there's a terraformable ELW in the data:

Code: 
mysql> select subType,count(*) from planets where terraformingState='Candidate for terraforming' group by subType order by subType;
+--------------------------+----------+
| subType                  | count(*) |
+--------------------------+----------+
| Earth-like world         |        1 |
| High metal content world |  2424270 |
| Metal-rich body          |       21 |
| Rocky body               |    76078 |
| Water world              |   854588 |
+--------------------------+----------+

That ELW is Preae Theia CA-A d15 D 1. It's a one of a kind (so far). Considering its close proximity to the bubble, it makes me wonder if it was originally a candidate for terraforming that FDev manually flipped into an ELW.
 

Sapyx

Sapyx
Surface pressure: 0.05 atmospheres
Surface temperature, 257 K.
Atmospheric oxygen levels: negligible.

Yes, it's terraformable (assuming it's in the Goldilocks zone). No, it should not be classified as an ELW. A human who popped their Remlok helmet open on that planet would die, quickly, from numerous different causes (asphyxiation, depressurization and hypothermia).

Any chance of someone popping over to this system, to grab an in-game screenshot to confirm these rather odd discrepancies?
 

Saool

Saool
Also no volcanism.

So one would presume no active magnetic field. This might be why the pressure is so low. The atmsophere is being stripped by the cosmic wind. This looks like an early Mars.
 

Rooster Podunk

Rooster Podunk
Orvidius said:
I wouldn't take the image at the link literally. I think EDSM just uses a handful of generic pictures to show the type of planet.
Click to expand...
Thanks. As for checking it I'm afraid I'm about 20k out from it. If you don't mind waiting for the corn to grow I'll try to make it past there on the way in.
 

BradHann

BradHann
Stellar Forge is quite happy to define <5% O2 as "human-breathable."

Looking through the screenies of my tagged ELWs, I noticed that the lower the O2, the thicker the atmosphere is likely to be - sometimes over 4 atmospheres. Any biologists around care to weigh in on this - is a thicker atmosphere going to compensate for the low percentage of that atmosphere being oxygen?
 

Rustnsawdust

R
BradHann said:
is a thicker atmosphere going to compensate for the low percentage of that atmosphere being oxygen?
Click to expand...
I'm not a biologist, but a quick Google revealed that Earth atmosphere at sea level is around 20% oxygen, and also that, since atmosphere is 'thinner' at altitude, we struggle with lower concentrations. So it seems logical that levels lower than 20% could be compensated for at higher atmospheric pressure. In other words, higher pressure means more parts per million of oxygen being breathed. But I'd guess that there are extra difficulties in breathing at 4x atmospheric pressure.

So I'd give you a definite 'maybe' on that one :)
 

Vasious

Vasious
Saool said:
Also no volcanism.

So one would presume no active magnetic field. This might be why the pressure is so low. The atmsophere is being stripped by the cosmic wind. This looks like an early Mars.
Click to expand...


So could it be a slowly dying ELW that is "terraformable" as could be restored and maintained by 3300's Tech?
 

Sapyx

Sapyx
BradHann said:
Stellar Forge is quite happy to define <5% O2 as "human-breathable."

Looking through the screenies of my tagged ELWs, I noticed that the lower the O2, the thicker the atmosphere is likely to be - sometimes over 4 atmospheres. Any biologists around care to weigh in on this - is a thicker atmosphere going to compensate for the low percentage of that atmosphere being oxygen?
Click to expand...
Rustnsawdust said:
I'm not a biologist, but a quick Google revealed that Earth atmosphere at sea level is around 20% oxygen, and also that, since atmosphere is 'thinner' at altitude, we struggle with lower concentrations. So it seems logical that levels lower than 20% could be compensated for at higher atmospheric pressure. In other words, higher pressure means more parts per million of oxygen being breathed. But I'd guess that there are extra difficulties in breathing at 4x atmospheric pressure.

So I'd give you a definite 'maybe' on that one :)
Click to expand...

Not a biologist either, but I can confirm that it's "partial pressure of oxygen in the atmosphere" that it's looking at for ELW compatibility, not the raw percentage. 5% oxygen at 4 atmospheres is the same partial pressure as 20% oxygen at 1 atmosphere.

That "4 atmospheres" is about the upper limit for human breathability (ther aren't any proc-genned ELWs with pressures above 4.2 atmospheres). If the pressure gets any higher, nitrogen narcosis renders humans unable to think clearly, in a similar fashion to drinking alcohol. If you dumped a bunch of colonists on a six-atmospheres-pressure planet, they'd all be the equivalent of drunk within a couple of minutes. They might be very happy, but they wouldn't get much productive work done. There are some terraformed worlds with pressures that are much higher; life on those colony worlds must be...interesting.

If you replace the nitrogen with helium (which does not have a narcotic effect) you can go to much higher pressures - this is what deep-sea divers do - but the Stellar Forge appears to be incapable of giving Earth-like planets a high-helium atmosphere.
 

Saool

Saool
The terraformed and populated world 'Badfort' in the BD+22 4939 system, has a pressure of over 6 atmospheres. My friends and I did speculate on what it would be like to live there.

At that pressure, otherwise breathable gasses would be toxic so whilst you could wonder around outside, you would need a breathing mask. But the other real danger would be sound. A thunder storm could cause real damage to your ears.
 

Sapyx

Sapyx
New Africa, the planet in Epsilon Indi about which the famous supermoon Mitterand Hollow orbits, has a pressure of 5.49 atmospheres. It's atmosphere is thick enough that the surface features are completely obscured in the haze; a feature never, ever seen on "natural" ELWs.
2DBPA1i.jpg
 

Sapyx

Sapyx
Okay, after a turbulent few days in cartographic limbo, I have finally arrived at the destination system mentioned by the OP. It is...

A perfectly ordinary terraformable HMC. It is not, repeat NOT, an Earth-like.
HgMEq6M.jpg


I have scanned the system while EDD was running, so EDSM has updated the system with the new data. It will now no longer appear in the database as anything special.

Sorry guys, looks like it was some kind of transcription error. All of the other vital statistics for the planet were correct, just the planet class itself was wrong.
 

marx

marx
Hm, this makes me wonder how exactly this happened. I don't suppose we have the date of the original upload?
 

Orvidius

Orvidius
It looks like my copy hasn't been overwritten with the new data yet. The last update timestamp from EDSM is "2019-05-16 16:22:16"
 
You must log in or register to reply here.
Back
Top Bottom