One ______________ is defined as the distance to a star when the star exhibits a parallax of one second of arc.
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Q144: On the H-R diagram, the Sun lies
Q145: When the Sun moves off the main
Q146: Familiar groups of stars that are part
Q147: The closest star to the Sun is
Q148: The stars of highest photospheric temperature are
Q150: The imaginary, huge, apparently moving sphere on
Q151: The angular measurement in hours, minutes, and
Q152: In a star, the condition of balance
Q153: An incredibly dense star so massive that
Q154: A star of magnitude 1 appears _
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