Philosophical Transactions of the Royal Society of London, Том 134

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W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1844
 

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Сторінка 322 - It is also perhaps important to observe, that now, as has always been the case, an increase of instrumental power has added to the number of the clusters at the expense of the nebulae, properly so called ; still it would be very unsafe to conclude that such will always be the case, and thence to draw the obvious inference that all nebulosity is but the glare of stars too remote to be separated by the utmost power of our instruments.

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