On Feb 3, 2008 11:20 AM, Thomas Dalton thomas.dalton@gmail.com wrote:
On 03/02/2008, Anthony wikimail@inbox.org wrote:
On Feb 3, 2008 10:08 AM, Thomas Dalton thomas.dalton@gmail.com wrote:
What if the hypothetical existence of one is verifiable?
If it's verifiable, it isn't hypothetical, is it?
The hypothesis can be verifiable.
In which case, we're talking about the notability of a hypothesis, not of a galaxy or an ETI. The hypothesis could have an article, but would a galaxy that's only claim to notability is being mentioned in this hypothesis warrant anything more than a redirect to the ariticle on the hypothesis?
Aren't all galaxies inherently notable?
Do you know how many galaxies there are?
Not exactly, no. I'm pretty sure it's a lot, though. Of course I'd only be referring to the ones we know about!
Well, we need to stick to the observable universe, certainly - anything outside the observable universe is causally disconnected from us, so is certainly not notable.
It's not practical to have articles on all of them, so I would say they are not inherently notable. Large ones, unusual ones, nearby ones, sure, but all of them? No chance.
Well, see above. In the case of galaxies that no one has ever written about, the question of "notability" is moot.
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/021127a.html
We estimate there are hundreds of billions. But only 3000 are "visible". I wonder what "visible" means, and I wonder how many are "observable".
I think that 3000 is how many there were in the tiny bit of sky they looked at. I think it's a reference to the Hubble deep field (http://en.wikipedia.org/wiki/Hubble_deep_field). The total number of galaxies in the observable universe is in the billions, certainly.
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Err, the number of galaxies in the observable universe is probably 10^10 - 10^13 or something ... the number of known galaxies? The number of known galaxies is probably a couple million, which is, I believe, the number in the Sloan Digital Sky Survey. If someone really wanted to write the articles ....
But I do advocate [[WP:V|A third party source]] as a minimum inclusion criterion (Perhaps this is why I've been called "an inclusionist troll"), and only galaxies which've been catalogued in some publication should have articles - maybe 2 million tops. Which some such articles might not be of interested again for a while, they're certainly verifiable and encyclopaedic, and not doing any harm.
Cheers, WilyD