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Forum » SpaceEngine » Space Journeys » The Search for Earthlike Atmospheres (Can we find a breatheable atmosphere in Space Engine?)
The Search for Earthlike Atmospheres
steeljaw354Date: Sunday, 18.09.2016, 14:16 | Message # 31
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I don't know if this is liveable, but it is the closest to an Earth like atmosphere I have found. I found a few other ones





Attachments: 4298573.jpg(215Kb) · 8321452.jpg(255Kb) · 7360632.jpg(300Kb) · 8638306.jpg(219Kb) · 8699789.jpg(254Kb)


Edited by steeljaw354 - Sunday, 18.09.2016, 14:41
 
tRetro-VisorDate: Sunday, 18.09.2016, 17:43 | Message # 32
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WatsisnameDate: Sunday, 18.09.2016, 20:48 | Message # 33
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tRetro-Visor, wow, that's a lot of oxygen! It would actually poison you over a few days. The CO2 and SO2 would kill almost immediately.

steeljaw354,

A good rule of thumb is that if SO2 appears at all in the planet's overview (the main screen text, not the info/wiki tab), then it can't be breathable. This is because a gas is listed there if it makes up at least 1% of the atmosphere's composition. We need at least 0.1atm of pressure for air to possibly be breathable (100% pure O2 at 0.1atm), and 1% SO2 out of 0.1atm is 0.001atm partial pressure of SO2 which would kill very quickly.





 
steeljaw354Date: Sunday, 18.09.2016, 22:46 | Message # 34
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Has anyone found a truely earth like planet?
 
DoctorOfSpaceDate: Sunday, 18.09.2016, 22:58 | Message # 35
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Sorta the point of this thread.




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WatsisnameDate: Monday, 19.09.2016, 10:26 | Message # 36
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Quote steeljaw354 ()
Has anyone found a truely earth like planet?


For certain values of 'truly' and 'Earth-like'. smile People have found planets that are more or less similar to Earth, but it's insanely difficult to find a very close match. There more we look the closer we might get.





 
steeljaw354Date: Thursday, 22.09.2016, 00:04 | Message # 37
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I found a few close ones, but they are probably deadly.


Attachments: 0511599.jpg(314Kb) · 6411666.jpg(300Kb)


Edited by steeljaw354 - Thursday, 22.09.2016, 00:05
 
WatsisnameDate: Thursday, 22.09.2016, 10:28 | Message # 38
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Oh wow, that first one is a really good find. smile I've not found any terras better than that. The only major problem is the SO2 as usual -- it would kill within an hour. The oxygen is similar to being at 2400m altitude, which is fine. CO2 level might cause a bit of drowsiness, but otherwise fine. CH4, I'm not really sure, but it doesn't appear to be lethal. The H2S would have an odor and may cause some nausea and stuff, but it wouldn't kill you.




 
AlekDate: Thursday, 22.09.2016, 17:29 | Message # 39
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If instantly made reality, would any of these atmospheres combust due to the oxygen level, or has SpaceEngineer coded the atmosphere properties to not return such a thing?




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Edited by Alek - Thursday, 22.09.2016, 17:30
 
ŞtefanDate: Thursday, 22.09.2016, 20:49 | Message # 40
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Alek, the atmosphere generator code is still very primitive, so I doubt it takes into consideration this.
 
catyak2005Date: Friday, 23.09.2016, 17:36 | Message # 41
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Here is my list of recently searched planets within 500 light years of Sol. Most have high Oxygen content, reasonable atmospheric pressures and close to normal Gravity all at a comfortable temperature. (noted in Fahrenheit)



Star Type Planet Type ESI % O2 Temp F ATM Gravity Rotation
HIP 17174 6 Yellow Dwarf Temperate Terra, Org-Multi M&T 0.963 16.80% 24 0.667 0.96 16hr
HIP 49188 4 Orange Dwarf Temperate Terra, Org-Uni Marine 0.959 14.40% 35 0.936 0.8578 4dy
HIP 49596 4 “ Temperate Terra, Org-Uni Marine 0.931 31.60% 20 1.13 1.326 3.7dy
HIP 53748 4 White Main Temperate Terra, Org-Uni Marine 0.925 40.00% 38 1.04 0.69 18hr
HIP 1297 5 Yellow Dwarf Temperate Oceania, Org-Uni Marine 0.924 3.34% 25 1.1 0.8598 16hr
HIP 11111 4 Orange Dwarf Temperate Terra, Org-Multi M&T 0.911 24.00% 35 1.14 0.6636 39hr
HIP 15310 6 Yellow Dwarf Warm Terra, Org-Multi Marine 0.911 3.77% 100 1.41 1.084 15hr
HIP 48209 4 Yellow Dwarf Cool Terra, Org-Uni Marine 0.908 24.20% -34 1 0.93 16hr
HIP 4613 4.4 White Main Temperate Terra, Org-Uni Marine 0.907 32.00% 49 0.418 0.659 40dy
HIP 31013 4 White Main Temperate Oceania, Org-Uni Marine 0.889 24.50% 67 1.01 0.7807 17hr
HIP 53324 6 White Main Warm Terra, Org-Uni Marine 0.885 36.60% 95 0.906 1.2 14hr
HIP 51603 4 “ Temperate Terra, Org-Uni Marine 0.877 68.30% -24 1.6 1.27 13hr
HIP 34468 6 White Main Temperate Terra, Org-Uni Marine 0.847 16.30% 13 2.13 0.54 20hr
HIP 19730 8.6 Orange Giant Warm Terra, Org-Uni Marine 0.822 42.00% 71 8.6 0.979 9dy
HIP 54412 4 White Main Warm Terra, Org-Uni Marine 0.818 24.80% 107 0.531 1.452 13hr
HIP 48771 4 White Main Temperate Oceania, Org-Uni Marine 0.814 57.80% 48 1.36 0.3557 25hr
HIP 18986 4 Yellow DwarfTemperate Oceania, Org-Uni Marine 0.793 25.90% 22 0.142 0.39 24hr
HIP 52645 7 Orange Giant Warm Terra, Org-Uni Marine 0.769 28.20% 88 0.515 1.813 11hr
HIP 51603 3 White Main Warm Terra, Org-Uni Marine 0.751 9.13% 156 2.67 0.865 2.6dy

Attachments: 2796831.jpg(160Kb)


Edited by catyak2005 - Friday, 23.09.2016, 17:37
 
steeljaw354Date: Friday, 23.09.2016, 20:19 | Message # 42
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Found something different. It has a really low atmosphere pressure and is cold though.

Attachments: 0469810.jpg(354Kb)
 
WatsisnameDate: Saturday, 24.09.2016, 04:37 | Message # 43
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Found a temperate terra with an atmosphere that is survivable for about one hour, and is relatively safe for about 10 minutes.



It wouldn't be a very pleasant time. As usual, blame SO2. The O2 level is right below the limit of what we can permanently adapt to, and is similar to being a bit above 6000m elevation on Earth. Overall though, this is a step in the right direction -- very close to breathable air on an Earth-like planet. smile





 
steeljaw354Date: Saturday, 24.09.2016, 11:41 | Message # 44
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Well you could use gas masks or something to block out the SO2.
 
grisha512Date: Saturday, 24.09.2016, 12:53 | Message # 45
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SO2 is aways the party pooper dry .
 
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