# atmosphere's questions - English 1answer

142 atmosphere questions.

### 16 Are there any known atmospheres that would support traditional combustion engines?

4 answers, 2.629 views atmosphere combustion
If we landed a traditional automobile on the moon, the combustion engine would lack oxygen, and, for obvious reasons, would not function. I'm wondering if a planet terrestrial body exists where we ...

### 2 Where are we in the current effort to make mars habitable? [closed]

I feel like this should be a massive effort put forth by all countries. As a civilization, our population is growing at a break-neck rate. Not only would it be a fail-safe should something happen to ...

### 1 What is the science behind the variation of Mars' effective sky temperature with latitude and longitude? Why the “hot spot”?

1 answers, 61 views mars atmosphere
After reading this interesting answer to the question How cold is the Martian sky at night? Or the day for that matter? I found that Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM ...

### 4 Is really almost all the water in the atmosphere of Venus above the clouds?

1 answers, 99 views planetary-science atmosphere venus water
In this question about the amount of sulfuric acid in the atmosphere of Venus it is calculated that the amount of water in it's atmosphere is $9.6 \times 10^{15} \text{ kg }$ H$_2$O. In one of the ...

### 9 Is Mars' gravity strong enough to hold a human-breathable atmosphere?

2 answers, 226 views mars gravity atmosphere
If we ever try to make Mars outdoors habitable, won't the air just keep flying off into the outer space because of low gravity?

### 9 How much sulphuric acid is on Venus?

2 answers, 1.051 views planetary-science atmosphere venus
According to Wikipedia there are just 150 ppm of sulphur dioxide and 20 ppm of water in Venus' atmosphere. At the same time it is known that there is a considerable amount of sulphuric acid in the ...

### 8 Why not bring life to the atmosphere of Venus along with the next exploring mission?

Why not bring cyanobacteria and fertilizer to the atmosphere of Venus to improve conditions for life there by producing oxygen ? Planetary protection could be a reason. According to Wikipedia: ...

### 14 Could we see the surface of Venus after the explosion of a H-bomb in its atmosphere?

4 answers, 3.651 views atmosphere venus explosives
The dense atmosphere of Venus is mainly composed of carbon dioxide and nitrogen, with clouds made of sulfuric acid droplets, which make optical observation of the surface impossible. As can be seen ...

### 2 Are the mountains of Venus of any help for us to explore the surface?

The circular orbit and small axial tilt results in no seasons, coupled with the well-known strong greenhouse that makes nights just as hot as days. As pressure gets lower by height, so does ...

### 2 What are the ranges a human can survive AND breathe in?

1 answers, 114 views atmosphere science
I am writing a space sci-fi short story series, and I am trying to figure out what the range in pressure a human can survive AND breathe. I am trying to find the lowest, safest air pressure a human ...

### 2 Concentration of gases in an atmosphere

1 answers, 36 views planetary-science atmosphere sensors
this question made me think what type of technique is used to get concentration of gases on planets? One can get the composition using spectrometry but is there anyway to tell concentration of each ...

### 2 Does Juno's UVS have any chance to spot Europa plumes?

JIRAM has recently been proven to be useful to monitor the volcanic activity on Io, from a considerable distance. Europa Clipper will have an ultraviolet spectrograph which be pretty much a copy of ...

### 1 Looking for atmospheric density models of various planets and moons

0 answers, 20 views reentry atmosphere
Looking for atmospheric density models of various planets and moons, any sort of data/resources/database of this information would be extremely useful as I am working on recreating these models for ...

### 16 Is atmospheric skimming for propellant feasible?

5 answers, 768 views fuel atmosphere oxygen hydrogen fuel-depots
A recent comment in a discussion of satellite refueling mentioned the possiblity of a spacecraft dipping into the atmosphere from LEO to obtain oxygen. Similarly, the science fiction RPG Traveller ...

### 9 Titan - Is the source of so much Methane being overlooked?

Is the source of so much Methane on Titan being overlooked? Tons of very intelligent and knowledgeable people already looked at it, so the answer in undoubtedly "no", so I guess my question is more ...

### What is the procedure when a spacesuit gets a tear in it? [duplicate]

1 answers, 70 views atmosphere spacesuits emergency
What do you do if you are in space and you get a rip in your spacesuit other than getting right with God? What if you cannot get back to base in time?

### 26 Is the “airship to orbit” mission profile feasible?

By one of those weird coincidences, I had been on JP Aerospace's site mere hours before reading this question about space dirigibles here. Their mission plan seems too good to be true. They are ...

### 1 Can air pressure be accumulated this way for a biodome or spacesuit?

Using plastic or rubber or something similar and transparent be inflated with each layer having a increasing pressure lessening the strain on the containing material? When one or two layers fails the ...

### 2 How does methane waste produced by the ISS interact with our Atmosphere?

0 answers, 54 views iss atmosphere waste methane
The ISS uses a Sabatier reactor to recover oxygen from carbon dioxide. This has an output product of methane. I would imagine that most methane that enters our atmosphere at ground level only reaches ...

### 6 How does an atmospheric probe measure temperature during descent?

I heard that the Galileo spacecraft sent Galileo Probe into Jupiter, and it reported temperatures reaching 153 degrees Celsius. The question is, when you send a probe crashing into a planet that has ...

### 9 Measuring the pressure and temperature of Pluto's atmosphere using stellar occultations

Is this primarily done analyzing the Voigt profiles absorption bands on background of stellar spectra or on re-emission bands of atmospheric compounds? Assuming Pluto's atmosphere behaves like an ...

### 45 Why is the breathing atmosphere of the ISS a standard atmosphere (at 1 atm containing nitrogen)?

8 answers, 25.878 views iss atmosphere life-support
The Wikipedia page for the International Space Station says that it has a fairly Earth-like, sea-level atmosphere: 21% oxygen, balance nitrogen at 101.3 kPa. Supposedly it's because a pure-oxygen ...

### 2 Building a Drag model for rocket optimization

0 answers, 43 views rockets atmosphere drag
I need to build a drag model for my rocket optimization program and I stumbled upon by the following formula: $CD = CD_c(M)$, $K_n < K_{nc}$, $CD = CD_{fm}$, $K_n > K_{nf}$, \$CD = CD_c +(CD_{...

### 9 Will uncovering the ice deposit in Utopia Planitia improve the climate on Mars?

3 answers, 435 views mars atmosphere water climate
In 2016 a large ice deposit has been found within the Utopia Planitia region on Mars by the SHARAD instrument on board of the Mars Reconnaissance Orbiter. The thickness of the deposit ranges from ...

### 1 Space Station in atmosphere with continuous reboosting to preserve orbit

1 answers, 126 views orbital-mechanics orbit atmosphere
I recently watched the series Altered Carbon. In that series, they showed a floating space station called "Head in the Clouds". There is a blue sky here, even clouds. This would imply a height of &...

### How much soil can be supported by an inflatable habitat on Mars?

What weight of Martian soil can be supported by the top of an inflatable habitat pressurized at Earth's atmosphere? While habitat's shape is a huge factor, this has 20 meter modules, semi-cylindrical ...

### 12 Bounce off the atmosphere at reentry?

2 answers, 950 views reentry atmosphere aerobraking
I am just watching Space Race part 3 and the cosmonauts just got their first view of Wostok. The scientist who designed the retrorockets told the soon-to-be spacemen that the rockets would have to be ...

### 5 Launching sounding rockets from the magnetic equator (ISRO's Thumba)

The Thumba Equatorial Rocket Launching Station is operated by ISRO for launching sounding rockets because magnetic equator passes through it. Equator gives additional velocity, But what advantage ...

### 4 Could metal sulfates stay in the sulfuric acid layer of Venus?

0 answers, 66 views atmosphere venus astrobiology
For cyanobacteria metal ions like K+, Mg+ and other essential nutrients like phosphorus are vital for growing and to expand. So they could only thrive in the clouds of Venus if at least metal ions ...

### 2 Is there likely to be life in Venus's upper atmosphere?

1 answers, 152 views atmosphere venus life habitat
From what I understand, Venus's upper atmosphere is much more habitable than its surface, with a temperature and pressure that humans could tolerate. However, lack of oxygen and sulphuric acid would ...

### 5 Why not simulate certain regions of the atmosphere of Venus?

0 answers, 148 views atmosphere venus astrobiology simulation
Many people would like to know if any form of life could survive anywhere in the atmosphere of Venus. Researchers have simulated conditions on Mars and found that after a month some cyanobacteria ...

### 4 What is the typical size of the sulfuric acid droplets in the atmosphere of Venus?

0 answers, 70 views atmosphere venus
According to Wikipedia: Venusian clouds are thick and are composed mainly (75-96%) of sulfuric acid droplets. These clouds obscure the surface of Venus from optical imaging, and reflect about 75% ...

### 9 Would a mars base need to expel excess heat?

I've read that on Mars you lose 30% of your heat through convection and 70% through black body radiation. (The much lower amount from convection due to the tenous atmosphere vs. Earth.) http://www....

### 6 Can there be an atmosphere in a cave on an atmosphere-less planet?

1 answers, 238 views planetary-science atmosphere exoplanet
I am making an exoplanet for a game and was wondering whether a planet without an atmosphere (or at least with a very weak atmosphere) could support caves that do have an atmosphere, or whether the ...

### 2 Does “What happens beyond Kármán, stay beyond Kármán”?

2 answers, 237 views rockets atmosphere exhaust
The title refers to the promotional slogan "What happens in Vegas, stays in Vegas." The question How much CO2 would city-to-city rocket flight produce compared to airliners? seems to be focused on ...

### 11 How much sunlight gets to the surface of Titan? What would astronauts see?

2 answers, 2.831 views planetary-science atmosphere titan insolation
Saturn being at 10 A.U. means sunlight on Titan's cloud tops is about 1/100 that on Earth's. That's 4000 times the illumination of Earth's moon. Titan's atmosphere is described as opaque smog. If ...

### 8 What are the characteristics of the Earth's atmosphere near the Karman line and why?

I am wondering - what is the nature of the atmosphere in and around the transition to space at the Karman line? It is not difficult to find references using terms like "in the atmosphere" and "out of ...

### 6 Has an astronaut ever seen pixies, ELVEs, sprites or blue jets (without a camera)?

The NASA Science video ScienceCasts: A Display of Lights Above the Storm shows several examples of Transient Luminous Events (TLEs) (Upper Atmospheric Lightning) being filmed by high-sensitivity ...

### 13 At what altitude does transonic compressibility become a non-issue?

I know that on the forthcoming SpaceX attempt at sea landing the first stage, they have added hypersonic fins to the first stage. I was curious as to what altitude transonic compressibility is an ...

### 4 Can we make a space blimp?

2 answers, 1.813 views atmosphere space-elevator geophysics
OK. Hear me out. I know that blimps float because of the buoyancy of air, and there is no air in space. But think of the way a boat floats on the top of water even though the material that the boat is ...

### 2 Range of atmospheric pressure and composition for plant survival?

0 answers, 67 views atmosphere habitat plants
I am currently working on a college senior design team that is looking at developing a small modular habitat that could sustain plant growth. These small modules would not include humans, so we only ...

### 30 Could the Moon keep an atmosphere?

When we think of terraforming a body in our galaxy Mars gets lots of consideration as the closest potential body. But what about the Moon? It is currently beyond our ability to add an atmosphere ...

### 10 Does the Venusian atmosphere's “super rotation” actually rotate?

2 answers, 348 views atmosphere venus weather
The atmosphere of Venus contains strong winds and is said to have a "super rotation" because the atmosphere (above a certain altitude) moves faster than what the ground does. No one can disagree with ...

### 23 Would a settlement on Mars need to import Nitrogen?

9 answers, 10.360 views mars atmosphere
The air on Earth is about 20% oxygen and about 78% nitrogen. Best case, there seems to be sufficient oxygen (in water) to support colonization in the polar ice caps. What about the other 4/5 of the ...

### 14 Maximum survivable atmospheric pressure

Given a similar mix of gases to those in our Earth's atmosphere, what is the upper limit of survivable atmospheric pressure for a human? Could a human survive higher pressures with a gas mix unlike ...

### 13 Why do some meteors explode in air?

1 answers, 3.448 views atmosphere physics reentry meteors
I was reading about the Tunguska and Chelyabinsk meteors and I wonder what would cause a meteor to explode in the air, instead of hitting the surface?

### 5 Apparent temperature Mars

1 answers, 156 views mars atmosphere
Apparent temperature is the temperature equivalent perceived by humans, caused by the combined effects of air temperature, relative humidity and wind speed. There are several ways of measuring it, ...

### 7 What useful materials can be extracted from Venusian atmosphere?

Consider a cloud-top colony on Venus. What materials needed for the upkeep and expanding of the colony can be taken from Venusian atmosphere, excluding any possibility of mining the surface?

### 10 Does atmospheric entry shake the craft?

2 answers, 192 views reentry atmosphere
Does atmospheric entry shake the craft or does the process force the craft to fly in a straight line without causing vibrations? Sci-fi movies and all have the craft shake very slightly. It would ...

### 3 Could a terrestrial planet with a hydrogen atmosphere be habitable?

3 answers, 228 views atmosphere astrobiology exoplanet hydrogen
Many exoplanets, even small ones, have densities so low that it indicates that they have hydrogen atmospheres. Is a hydrogen gas atmosphere of a terrestrial planet somehow detrimental to biology as we ...