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Q
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Quark:
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A basic structure block of protons, neutrons,
and other elementary particles.
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Quasar:
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The brightest type of lively galactic nucleus,
believed to be powered by a super massive
black hole. The word “quasar”
is derivative from quasi-stellar radio source,
since this type of object was first recognized
as a kind of radio source. Quasars also are
known as quasi-stellar objects (QSOs). Thousands
of quasars have been experiential, all at
great distances from our galaxy.
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