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25 votes
Accepted

Is Earth's Atmospheric Thickness Related to Cosmic Ray Radiation?

It won't be (and isn't) zero. To see that, you want the plot on a logarithmic scale. Thus there isn't really a question to answer. The attenuation of cosmic rays will follow some exponential decay ...
ProfRob's user avatar
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6 votes

Impact of Atmospheric Water vapour on Optical Observations

There is actualy very little water vapour absorption in the optical part of the spectrum (350 - 750 nm). If "optical" is extended (as it often is) to include that part of the spectrum where ...
ProfRob's user avatar
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5 votes

What color is the Sky on other Planets?

On Mars, it's pink because of the rust in the air. But it's blue near the sunset, where light doesn't get to bounce off the iron and be reflected red. On Venus, it's yellow because of sulfuric acid ...
Miss_Understands's user avatar
3 votes

Meteors arriving to a planet's atmosphere?

The assumption of an atmosphere with nearly no wind is difficult to find or create - but let's assume we find such body. Gravity works on solid particles, and assuming that they are denser than the ...
planetmaker's user avatar
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3 votes

Meteors arriving to a planet's atmosphere?

Yes, the material (dust and gas) stays in the atmosphere, at least for a while. Larger particles of dust will tend to fall, but are strongly affected by turbulence in the lower atmosphere. Water and ...
James K's user avatar
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1 vote

Which of the blocked radiation windows will (mostly) open if one where to observe from the surface of Mars, instead of the Earth?

Question 1: From Tokunaga (2000):The major atmospheric absorbers [in the infrared] are H2O [and OH], CO2, N2O, CH4, and O3. Question 2: X- and gamma rays: These would still be strongly attenuated even ...
giardia's user avatar
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1 vote

What color is the Sky on other Planets?

Atmospheric color has to do mainly with how the elements that make up the atmosphere scatter light. On Earth, the atmosphere of around 20% $\require{mhchem}\ce{O2}$ scatters higher-frequency ...
ArchiveOfStars's user avatar

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