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Q&A

Posts tagged atmosphere

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Q&A How to increase air density on a planet?

The question is about what changes would have to be made to an Earth-like planet, in order to increase the density of air and hence make lifting gases more effective. If that is scientifically poss...

3 answers  ·  posted 9y ago by dot_Sp0T‭  ·  last activity 9y ago by dot_Sp0T‭

Question climate atmosphere
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Q&A What would happen to the ocean when lowering atmospheric density?

Suppose one fine day a mischievous god decided to eradicate all air molecules on Earth in an instant, my question is what will hapen to the ocean? Please kindly disregard (omit) your concern for li...

1 answer  ·  posted 9y ago by user6760‭  ·  last activity 9y ago by user6760‭

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Q&A A world with 1/3rd gravity but 1/2 atmospheric pressure. Would it be easier to fly?

Let's say on an alien planet called Thindor, the surface gravity is 3.27 m/s2 (which is 1/3rd of Earth's). But the atmospheric pressure is only 50 kPa (which is 1/2 of Earth's). Assume the same 20/...

6 answers  ·  posted 9y ago by DrZ214‭  ·  last activity 9y ago by DrZ214‭

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Q&A What would cause orange skies?

I'm starting a whole new planet for a story and would like it to have an orange sky during the day. At a basic level (I am not a smart man) what chemical composition would be most conducive to Ora...

3 answers  ·  posted 9y ago by Wompguinea‭  ·  last activity 9y ago by Wompguinea‭

Question atmosphere planets
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Q&A What would happen if Earth's oxygen reached the Sun?

The Scenario: The Sun is eternal. We are producing much more oxygen than we need. First off, would the atmosphere grow, or would it just become much more dense? Given the circumstances, if th...

2 answers  ·  posted 9y ago by Dexus‭  ·  last activity 9y ago by Dexus‭

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Q&A Effects of visiting other planets

I'm wondering what adverse effects might be felt by someone from a planet with, say, 80% of Earth's gravity and a denser, but breathable, atmosphere with a higher concentration of oxygen visiting a...

2 answers  ·  posted 9y ago by Jetscooters‭  ·  last activity 9y ago by Jetscooters‭

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Q&A What would happen if Earth had oceans of dense gas instead of water?

Ignoring the fact that we need water in order to survive, what would happen if all of the "oceans" on Earth were filled with a dense non-reactive gas (e.g. xenon or sulfur hexafluoride) instead of ...

3 answers  ·  posted 9y ago by Ethan Strider‭  ·  last activity 9y ago by Ethan Strider‭

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Q&A Desert planet's atmosphere and cavern system?

Ok, so I have this planet that I am still building. It is a desert planet, its surfice is almost completely arid with a few exceptions such as snow deserts in the poles. There is sentient life in ...

2 answers  ·  posted 9y ago by Xuu‭  ·  last activity 9y ago by Xuu‭

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Q&A Could humans breathe on a planet that had a liquid hemoglobin (or some artificial blood substitute) atmosphere?

This is about a fictional planet that has a solid land surface but on which the atmosphere is composed of some liquid containing hemoglobin, or some artificial blood substitute. I am not sure yet ...

2 answers  ·  posted 9y ago by coderworks‭  ·  last activity 9y ago by coderworks‭

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Q&A Commonly-occurring clouds below a forest canopy

What physical attributes of atmosphere and flora could cause clouds to form on a regular basis below the canopy of a forest between one-fourth and one-half the height of the forest, without impacti...

1 answer  ·  posted 9y ago by Frostfyre‭  ·  last activity 9y ago by Frostfyre‭

Question atmosphere flora
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Q&A What happens to air pressure if the ice caps completely melt?

Apologies; it just didn't seem like an appropriate question for Earth Science or Biology. Let me know if I'm incorrect. Maybe Physics? If all the ice, permafrost, ice caps, etc. melted due to glo...

2 answers  ·  posted 9y ago by Mikey‭  ·  last activity 9y ago by Mikey‭

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Q&A What light gas can I have in the upper atmosphere?

I want to have an upper atmosphere composed of a gas which is lighter than "air" so that my human occupants of a planet can harvest it and use it to fill blimps and hot air balloons. I'm planning ...

3 answers  ·  posted 9y ago by Liath‭  ·  last activity 9y ago by Liath‭