<p>Proxima Centauri is a red dwarf much denser (33X on average) than the sun. Yet I'm not finding anything about Proxima Centauri's photosphere. The Sun's photosphere is only 0.2 g/m3 (1/10,000th of sea level air. So I'm wondering about Proxima Centauri's photosphere. Is it a vacuum like the sun's photosphere? Or is it dense? I'm wondering in comparison to sea level air in g/m3. The star should be near enough for us to determine that.
<a href="https://en.wikipedia.org/wiki/Proxima_Centauri" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Proxima_Centauri</a> ;
<a href="https://en.wikipedia.org/wiki/Sun" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Sun</a></p>

CC BY-SA 4.0
2024-06-17T02:42:58.530Z
the Sun's photosphere is not a vacuum.  The density you give is somewhater denser than the atompshere of Triton, and haze and effects of wind have been detected on Triton.
M. A. Golding
CC BY-SA 4.0
2024-06-21T23:49:43.417Z
Interesting info, but not really the purpose of my question. I was wondering about Proxima's photosphere relative to sea level air (or to hydrogen gas's standard density).
Joe Peters
<star>
What's the density of Proxima Centauri's photosphere?
Joe Peters
# What's the density of Proxima Centauri's photosphere?

(Asked by: username_0 on 2024-06-14)

Proxima Centauri is a red dwarf much denser (33X on average) than the sun. Yet I'm not finding anything about Proxima Centauri's photosphere. The Sun's photosphere is only 0.2 g/m3 (1/10,000th of sea level air. So I'm wondering about Proxima Centauri's photosphere. Is it a vacuum like the sun's photosphere? Or is it dense? I'm wondering in comparison to sea level air in g/m3. The star should be near enough for us to determine that.
<https://en.wikipedia.org/wiki/Proxima_Centauri> ;
<https://en.wikipedia.org/wiki/Sun>

**Tags:** star
> **Comments:**
> **username_1**: the Sun's photosphere is not a vacuum.  The density you give is somewhater denser than the atompshere of Triton, and haze and effects of wind have been detected on Triton.  
> **username_0**: Interesting info, but not really the purpose of my question. I was wondering about Proxima's photosphere relative to sea level air (or to hydrogen gas's standard density).  

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