In fact I was not comfortable with my attempt myself - "somewhere in the convection zone" sounded wobbly - thanks for explaining it more precisely.

So since I got the thumbs up, I'll have to come up with a new one.

Hmmmm.

There are strange sounds in Perseus. Where, how, and at what pitch?

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Non sunt multiplicanda entia praeter necessitatem.

That wouldn't be that old Bb note 57 octaves below middle C would it?

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

So fast..... I didn't even know it was an old one.

Well anyway - over to you, George!

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Non sunt multiplicanda entia praeter necessitatem.

Still interesting that a sound wave can travel through a galaxy.

Name the separate Nobel prize winners who were Father and son, yet could be said they established a paradox.

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

J. J. Thomson and George Paget Thomson maybe? Nobel prizes 31 years apart. The father established the particle nature of the electron, the son exploited its wave nature.

Yep! [imagine a clapping icon here] Pretty amazing, huh?

Ok, your shot.

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

OK, this one may be too much of a reach, but I noticed it while checking out the previous answer, concerning elections.

Electrons and planets have often been compared metaphorically--some of the first models of the atom compared one to a minature solar system. In fact, planets were named for their "wandering" amongst the fixed pattern of stars, and it seems something associated with electrons was also first noticed, and named, for its wandering ability. What name is that?

That would be the ion, wouldn't it (from Ancient Greek for "going"). The Anion is something going up (towards the + pole), the Kation something going "down" (towards the - pole).

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Non sunt multiplicanda entia praeter necessitatem.

Yes. Wikipedia has the etymology as "a goer" but I had noticed a passage in my old high school chemistry book (Chemistry, Smoot, Price, Barrett, p.315) that said ion meant "wanderer". I haven't found any other source to back that up, maybe they got confused with "planet" but I still thought that was a nice coincidence. Was Ion (of Ionia) a wanderer?

You're up.

PS: spoke too soon. This Los Alamos National Lab STB page says:I got a whole bunch of such links when I googled for faraday+ion+wanderer+coined

Ion is the present participle of Greek ienai, "to go". So its literal meaning when used as a noun is, as the Oxford English Dictionary succinctly puts it: "(a thing) going".

Faraday wrote (Philosophical Transactions of the Royal Society, 1834):
He clearly had in mind some sort of direct motion rather than wandering.

Ion of Ionia was the stay-at-home brother of Achaeus, so no help there, I'm afraid.

Grant Hutchison

Thanks Grant, I was going to say that. WRT the Ionians: This apparently comes from the same root. In the German Wikipedia article for Ionia, there is an implicit reference as to the etymology: The Ionians consisted of the Dorians, Aeolians and Achaians who formed the first wave of colonists (wanderers ) to the coast of Asia minor.

Awright, back to astronomy:

How is Beryllium relevant to the anthropic principle?

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Non sunt multiplicanda entia praeter necessitatem.

Are mulitple choice answers allowed?

1) Many of the proponents of the anthropic principle have slick hair and use Brylcream which may, or may not, contain Beryllium. [If not, and I have obfuscated the point, remember the Ionian folks have no more ions than me. ]

2) Beryllium is unstable but, surprisngly, can fuse with Helium and produce a stable carbon atom, (Hoyle should have got a Nobel on this ) essential to life in this here universe. This "conicidence" is in line with the anthropic principle itself.

3) Beryllium is unstable and so is the whole anthropic principle concept. [wink]

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

I'll got with number 2 (why did they take those smilies away from us?).

For the record: I do not use Bryl- or any other cream, and I have quite unruly hair.

Over to you, George

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Non sunt multiplicanda entia praeter necessitatem.

Hmmmm. Eroica, IIRC, stated there are now 83 known elements found in the Sun.

How many absorption lines have been seen in the Sun's spectrum thus far, approximately?

[Bonus: Are there any solar emission lines?]

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

Fraunhofer mapped 570, but now approximately there are thousands of known lines.



The corona emmits lines of its own.














how do you find the Andromeda Galaxy from the great square of Pegasus.


(observational question)

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Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross

Draw a line through the 3rd stars of the twin tails. It's on that line, just above the stars.

But about how many thousands? [Also, there is an alternative, sneaky answer (hint: black holes). ]

Yes. IIRC, it was a surprise as I think it is mainly H alpha which, in classical mechanics, would be too hot to produce these photons. I might be wrong on this, though.

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

1: Locate Alpheratz (Alpha Andromedae) in the NE corner of the Great Square of Pegasus

2: Proceed in an easterly direction to Delta Andromedae

3: Proceed NE to Beta Andromedae

4: Turning 90 deg to the right, proceed NW to Mu Andromedae

5: Extend the line from Beta to Mu by the same amount again, and you should find yourself very close to M31

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- Learn a lot teaching others.

Now you get to ask a question.







I can't give you credit. I asked "from Pegasus"

__________________
"I will do my best to understand and explain the universe from big to small without invoking miracles, unrepeatable events, or divine intervention. In place of those things I will use observations, mathematics, and science."


-Cross
My travel blog

Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross