3 sentences with 'nebulae'

Example sentences and phrases with the word nebulae and other words derived from it.

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« The basic composition of these sidereal clouds called nebulae is: hydrogen and helium for the most part, with infinitesimal parts of carbon, oxygen, calcium, sodium and nitrogen. »
« Although the average density of nebulae is so low that a vacuum resembling it has not been achieved on Earth, the sum total of this scattered matter in the Milky Way would be enough to build about ten thousand stars. »
« The most accurate knowledge about nebulae has only come from spectroscopy, a method of breaking down light and photographing the wavelengths - the colours - that make up the light. The dark lines that may appear signify an absorption by some chemical element. As each element absorbs a certain frequency, we know what nebulae are made of. »

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