Talk:Local Bubble

message: It's unclear from the existing picture what the Loop I, II, and III bubbles are, and how they related to the Local Interstellar Cloud. — Preceding unsigned comment added by Beland (talk • contribs) 00:26, 2 January 2008 (UTC)
thread_title:  Diagram needed 

message: Can someone explain how "the Local Bubble is the result of supernovae that exploded within the past two to four million years" but "The Solar System has been travelling through the Local Bubble for the last five to ten million years." --Raerth (talk) 21:32, 25 August 2008 (UTC)
thread_title:  Age of the local bubble 

message: Does anyone have an estimate of the number of stars in the Local Bubble?   There are only 3 shown in the drawing.   But there have to be 100s or 1000s of stars in the Local Bubble.  — Preceding unsigned comment added by 74.38.229.40 (talk) 12:01, 2 September 2011 (UTC)
replies: text: If the density of the neighborhood near Sol is representative, then the number of stars within the spherical region defined by radius R (in light years) can be estimated by: (4/3) * pi * R**3 / 66.  Plugging in a radius of 150 light years (sources conflict on this btw; some say the bubble is 300 light years across, others say 400), we get 214199 stars.  Applying the numbers from the table at http://en.wikipedia.org/wiki/Spectral_classification#Harvard_spectral_classification to this number, we can estimate the population by star type as: zero O, 279 B, 1285 A, 6426 F, 16279 G, 25918 K, and 163756 M .. which doesn't add up, but neither do the fractions from that table. Presumably the balance is other oddball stellar types.  TTK (talk) 02:20, 12 December 2011 (UTC)
thread_title:  How about an estimate of the number of stars in the Local Bubble? 

message: :Anyone have an idea (or a scientific discussion) of how the solar system is affected by being within this bubble? Apparently the gas of the medium within the lobe is a)much thinner but b)hotter than in the regular ISM. Does this affect the sun, the earth or us in any way? 83.254.151.33 (talk) 13:00, 26 August 2013 (UTC)
replies: text: At an ignorant guess, no, nothing gassy can come here into the Heliosphere. Naturally we're all awaiting the overdue news of Voyager 1 crossing the Heliopause and confirming the usual theories about our local ISM.  Jim.henderson (talk) 17:40, 27 August 2013 (UTC)
thread_title:  Impact on solar system? 

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thread_title:  External links modified 

message: Does the density include helium? It does not? Is it the gas density? It is not?
Helium adds a 40% of the mass of hydrogen in the Milky Way.
And the reference [4] simply doesn't exist.
Grausvictor (talk) 10:47, 9 March 2019 (UTC)
replies: text: the wording in the article is clear. the region is defined by hydrogen gas density not by total gas. you can do a better job at tracing references if you use the wayback machine,  -- 135.23.66.249 (talk) 18:18, 7 May 2019 (UTC)
thread_title:  About the [Dubious-Discuss] in the local bubble densities. 

message: I'll remove this nonsense: "... ten to twenty million years. The gas remains in an excited state, emitting in the X-ray band.[5][6]" It violates basic physics (states that could radiate x-ray deexcite in tiny fractions of a second, not millions of years), and is not supported by the sources either. They just talk about neutral(!) helium, allowing solar wind ions to radiate x-ray by charge transfer.WikiPidi (talk) 12:00, 3 June 2022 (UTC)
thread_title:  Remains excited?