The distance between starts is usually measured in
A. Light-years
B. Kilometers
C. Astronomical units
D. Miles
Physical properties used to measure stars include
A. Mass
B. Brightness
C. Size
D. All of the above
An H-R diagram
A. Is a map of the positions of the starS
B. Graphs stars according to their size and distance
C. Lists every known star
D. Graphs a sample of stars according to surface temperature an absolute brightness
The apparent change in position of an object with respect to a distant background is
A. Light-year
B. Parallax
C. Luminosity
D. Absorption
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