Which of the following is true of the star clusters in the Milky Way?
A) Open clusters are widely scattered in the Milky Way.
B) Globular clusters are concentrated along the disk of the Milky Way.
C) Open clusters are more common toward the constellation Sagittarius.
D) Globular clusters are much too far away to have measureable parallaxes.
Question 2
The _____ of a star is the time it takes the star to complete a cycle from bright to faint to bright again.
A) life span
B) luminosity period
C) period of pulsation
D) half-life
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OPEN GLOVING 1
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Attachment of gene clusters to the nuclear matrix