quasi-stellar radio source
- noun
- /ˈkwɑːziˈstɛlər ˈreɪdioʊ sɔrs/
- Archaic
:
fuente de radio cuasi estelar
- The name quasar, shorthand for "quasi-stellar radio source," implies the uncertainty about their nature.
Examples
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The discovery of quasi-stellar radio sources has changed our understanding of the universe's structure.
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Quasars, also known as quasi-stellar radio sources, are found billions of light-years away from Earth.
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Scientists study quasi-stellar radio sources to learn more about the early stages of galaxy formation.
Synonyms
13
9.9
A very bright object in space, like a star, powered by a black hole
1
6.7
An object in space that sends out radio waves we can detect
How Radio-Loud
- Specialized
3
9.9
- Archaic
Surface Forms
Morphology
quasi-stellar + radio + source
The phrase is compositionally built: 'quasi-stellar' means 'star-like' or 'resembling a star', 'radio' refers to radio (electromagnetic) waves, and 'source' means origin. Put together a learner who knows these constituents can infer it denotes a star-like object that emits radio waves (i.e., a quasar), so the meaning is directly derivable from the parts.
Etymology
The name quasi-stellar radio source comes from early space research. Scientists saw tiny bright points that looked like stars but sent out very strong radio waves. The parts quasi-stellar ('almost a star') and radio source ('thing that makes radio waves') give a clear picture: a star-like object that made powerful radio signals, and this object later became known as 'quasar'.