Definition of protogalaxy in English:

protogalaxy

nounPlural protogalaxies ˈprəʊtəʊˌɡaləksiˌprōdōˈɡaləksē

Astronomy

A vast mass of gas from which a galaxy is thought to develop.
〔天文〕原星系
Example sentencesExamples
- The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says.
- 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.
- 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

Astronomy

Eventually, these protogalactic fragments merged and galaxies and quasars formed.

Definition of protogalaxy in US English:

protogalaxy

nounˌprōdōˈɡaləksē

Astronomy

A vast mass of gas from which a galaxy is thought to develop.
〔天文〕原星系
Example sentencesExamples
- The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says.
- 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.
- 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.

单词	protogalaxy
释义	Definition of protogalaxy in English: protogalaxy nounPlural protogalaxies ˈprəʊtəʊˌɡaləksiˌprōdōˈɡaləksē Astronomy A vast mass of gas from which a galaxy is thought to develop. 〔天文〕原星系 Example sentencesExamples The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says. 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. 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 Astronomy Eventually, these protogalactic fragments merged and galaxies and quasars formed. Definition of protogalaxy in US English: protogalaxy nounˌprōdōˈɡaləksē Astronomy A vast mass of gas from which a galaxy is thought to develop. 〔天文〕原星系 Example sentencesExamples The protogalaxy probably has since coalesced into a giant elliptical galaxy, he says. 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. 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.
随便看	barrier cream barriered barrierless barrier method barrier methods barrier reef barrier rise barrier rogue barriers barrier trial Barrie, Sir J. M. barrie, sir j m barring barring barrings barrio barrios barrique barriques barrister barrister-at-law barristerial barristers barristers and solicitors collectively barroom