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This is an old revision of this page, as edited by Dmahony1 (talk | contribs) at 07:09, 24 March 2014 (→Sidis section removal: ~~~~). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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Contradictory information

it has now been proven that some dark galaxies contain stars. Therefore a dark galaxy is held together by dark matter alone. So far, no dark galaxy with a black hole as a center have been discovered This information is contradictory. Also, it isn't appropriately located. Anyone opposed to deletion? Privong 01:17, 3 March 2007 (UTC)[reply]


part of Lyman-alpha forest ?

DGs are small gas-rich, star-less, space clouds. They may have been observed, in fluorescence, at redshift z=2, from a background Quasar:

http://www.sciencedaily.com/releases/2012/10/121030161234.htm

Those DGs resemble, if in reflection, space clouds in the Lyman-alpha forest, observed in absorption (when they reside closer to the sight-line from a background Quasar to earth). Perhaps DGs are relic remnants of neutral space gas, otherwise only detected, as absorption lines in Quasar spectra? If so, then perhaps this article could be improved, with links to the Lyman-alpha forest article. 66.235.38.214 (talk) 03:45, 12 November 2012 (UTC)[reply]

References

Please, check the references as it contains some links without citation in the article. Madmoron (talk) 05:27, 22 December 2012 (UTC)[reply]

Weasel Words ish?

Nothing substantial but the first paragraph just reads as loads of 'someone claims' type statements.

Later on in 'Alternative theories' there is some dodgy grammar (I will sort that out) and it does not read as ... well something from a encyclopedia. — Preceding unsigned comment added by Mtpaley (talk • contribs) 00:51, 26 February 2013 (UTC)[reply]

I need advice. The 'Alternative theories' section is a mess, it is in poor English and full of unreferenced assertions but it is clearly a honest attempt at creating a good section and there is some information in there. What should be done?Mtpaley (talk) 21:23, 28 February 2013 (UTC)[reply]

--Gary Dee 18:20, 21 July 2013 (UTC)[reply]

Dmahony1 (talk) 07:09, 24 March 2014 (UTC)== Sidis section removal ==[reply]

I removed a section added by User:97.123.26.217 that claimed that "W. J. Sidis predicted in 1925 the existence of dark galaxies". Sidis did no such thing. Instead, he postulated the existence of "dark spaces", colossal regions of space that absorb all light entering them. This was his attempt to resolve Olbers' paradox.

From a modern perspective, the theory is completely untenable.

The universe, in his own words, is made up of "a sort of three-dimensional checkerboard" with alternating "bricks" of "black spaces" and "white spaces". Stars travel in and out of these spaces, emitting energy when in the "white spaces", i.e. our normal space, and recharging in the "black spaces" where light from the "white spaces" is absorbed and somehow delivered to the stars that happen to be there at the time.

A dark galaxy is invisible and essentially transparent to light. It's nothing like the "dark spaces" conceived by Sidis.

No evidence was given to back up the claim, and the text was irrelevant to the topic. That is why I removed the section. Sysdepot (talk) 12:25, 25 February 2014 (UTC)[reply]

OBJECTION TO REMOVAL OF SIDIS'S THEORY

Here's the first reason given for the removal:

"A dark galaxy is invisible and essentially transparent to light. It's nothing like the "dark spaces" conceived by Sidis."

Webster's defines transparency: "(1) ... having the property of transmitting light without appreciable scattering so that bodies lying beyond are seen clearly ... "

Dark galaxies are the opposite of transparent.

The remover claims secondly: "No evidence was given to back up the claim, and the text was irrelevant to the topic. That is why I removed the section."

Sidis is quite specific that evidence can be found in the region of the Magellanic Clouds. [1]

Please reinstate the removed text. How can someone, who is not clear about what transparency is, and therefore what a dark galaxy is, simply remove Sidis's theory from consideration? Does Wiki bless with its imprimatur only the popular miracle-based cosmology with its fanciful explosions of nothing and expansions faster than the speed of light? --Dan Mahony (dan@sidis.net) — Preceding unsigned comment added by Dmahony1 (talk • contribs) 06:58, 24 March 2014 (UTC)[reply]

  1. ^ http://www.sidis.net/DSGD0114.htm
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