Multiple Choice
Which of the following is a method for measuring the diameter of a star?
A) watching the body of the Moon go across the star
B) getting the light curve of an eclipsing binary star
C) comparing the color of a star seen high above our heads and then again when it's near the horizon
D) measuring the spectrum of a spectroscopic binary
E) more than one of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q11: One of your good friends who is
Q12: What was the first evidence that gravity
Q13: An H-R Diagram plots the luminosity of
Q14: Some "superstars" give off more than 50,000
Q15: A team of astronomers discovers one of
Q17: I am measuring the spectrum of the
Q18: Most of the stars we can see
Q19: Ninety percent of all stars (if plotted
Q20: Why can astronomers not measure the diameters
Q21: Stars on the main sequence obey a