protogalaxy
Americannoun
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protogalaxies
plural
noun
Other Word Forms
Noun Inflected Forms
Etymology
Origin of protogalaxy
Example Sentences
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When its dark matter power source gives out, a dark star would quickly collapse into a 1-million-solar-mass black hole—a perfect large seed ready to be adopted by a nearby protogalaxy.
From Science Magazine ● Aug. 22, 2023
As the first stars in a protogalaxy begin to shine, they inject more heat into the gas, pumping the brakes on further star formation.
From Science Magazine ● Aug. 9, 2022
Future proposals might look for evidence of those first protogalaxies, perhaps using the explosive deaths of supersized first stars in especially luminous and energetic supernovae as markers for their existence.
From Scientific American ● Sep. 14, 2022
Gravity guided the subsequent interactions between these protogalaxies, which eventually merged to form larger galaxies.
From Scientific American ● Sep. 14, 2022
But, he added, “they come in herds,” clumps that might be the seeds for the earliest protogalaxies, and they explode: “We can see them when they explode.”
From New York Times ● Dec. 20, 2021
Mapping out how protogalaxies formed might also reveal something about the nature of dark matter, Rieke says.
From Science Magazine ● Nov. 11, 2021
Other protogalaxies with weaker gravity or less initial rotation flattened very little and became the first elliptical galaxies.
From "Cosmos" by Carl Sagan
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