单词	protogalaxy
释义	protogalaxy /ˈprəʊtəʊˌɡaləksi / noun (plural protogalaxies) Astronomy A vast mass of gas from which a galaxy is thought to develop.According to current models, that's not enough time to allow for the formation of either the quasars that illuminate the atomic gas or the protogalaxies that harbor the first stars.... The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says. Those that are still around us bear the imprint of the chemical composition of the protogalaxy in their atmospheres, like living fossils of a bygone era in the history of the Earth. Derivatives protogalactic adjective ... Eventually, these protogalactic fragments merged and galaxies and quasars formed.
随便看	adjuratory adjure adjurement adjurer adjuror adjust adjustability adjustable adjustable pitch adjustable-rate adjustable spanner adjustable wrench adjustably adjustage adjustation adjusted gross income adjuster adjusting entry adjustive adjustment adjustmental adjustment center adjustment centre adjustment disorder adjutage

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