Astronomical Dictionary
Letter: Q


Dictionary of Astronomical Definitions and Terms.
Astronomical | Q

 

Definition


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Quadrature
When a superior planet; Jupiter, Saturn etc.; is at right angles to the Sun, as seen from Earth, i.e. the Sun and the Moon are square, or 90? apart.
Category: Astronomical
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Quasars
A quasi-stellar object. Quasars are enormously distant and immensely powerful objects that exhibit variability over short periods of time. A quasar is very similar to a QSO (quasi-stellar object) but gives out radio waves also. They also exhibit very large red-shifts. At the present time, there is much about quasars that is not understood.
Category: Astronomical
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Astronomical

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