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Questions tagged [molecules]

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What would happen to the sky colour if SO2 made up 95% of the atmosphere?

Taking into account the Rayleigh scattering phenomenon, assuming that the atmosphere is 1 bar, how would the light from the G2V-type star interact with this kind of environment? Could the colour of ...
Sam Biswas's user avatar
6 votes
1 answer
80 views

Molecule formation when an atomic gas cools down

I have read about the actual formation of interstellar molecules; although interstellar chemistry is very different from solvent-based chemistry on earth, I understand it to be driven by the presence ...
SgtJohn74's user avatar
17 votes
1 answer
2k views

Are Buckyball-sized black holes possible?

The first item is the basic question; the subsequent items build upon it if it's possible. If these need to be broken into separate questions, I can do that, but they're pretty tightly related. Is a ...
RoUS's user avatar
  • 281
7 votes
2 answers
1k views

Why is molecular hydrogen (H2) so difficult for astronomers to detect?

I am reading a great deal about the various forms of hydrogen throughout the universe, and I keep reading that 'molecular hydrogen is notoriously difficult to detect', and other sentiments along those ...
Kurt Hikes's user avatar
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0 votes
1 answer
158 views

How do they know the newly-spotted gas near the center of our galaxy is molecular without knowing what gas it is?

Phys.org's Mystery gas discovered near center of Milky Way links to Teodoro et al 2020 in Nature Cold gas in the Milky Way’s nuclear wind who's abstract is shown below. Question: My reading of the ...
uhoh's user avatar
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3 votes
2 answers
729 views

Air molecules per cubic foot at a certain altitude above the surface

The Earth's and other celestial bodies' atmospheres become thinner the higher you go. Imagine you were able to see atoms/molecules. At what altitude above the Earth's and Mars' surface would you see ...
Giovanni's user avatar
  • 227
12 votes
1 answer
2k views

Why doesn't Titan have a carbon dioxide atmosphere?

Earth's primitive atmosphere had large amounts of carbon dioxide, as did the ancient Martian atmosphere. Venus's current atmosphere is no exception either. So why does Titan have next to none of this ...
URIZEN's user avatar
  • 387
4 votes
0 answers
69 views

How significant is the effect of galactic rotation on line broadening of carbon monoxide?

In class the other day, we were discussing observations of rotational transitions of carbon monoxide, namely, the $J=1\to0$ and $J=2\to1$ lines. We originally had assumed that both lines would have ...
HDE 226868's user avatar
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