Multiple Choice
Two stars have the exact same luminosity, but star Y is four times dimmer looking that star X. This means that
A) star Y is four times as far away as star X
B) star Y is 16 times as far away as star X
C) star Y is half as far away as star X
D) star Y is twice as far away as star X
E) we can't figure out the relative distance of the two stars from the information given
Correct Answer:
Verified
Correct Answer:
Verified
Q6: Studies of the spectra of stars have
Q7: In recent decades, astronomers discovered stars even
Q8: The first astronomer who did photometry in
Q9: One similarity in the spectra of T
Q10: The astronomer who, at the turn of
Q12: Astronomers call the motion of a star
Q13: When an astronomer rambles on and on
Q14: When an astronomer measures a color index
Q15: Which of the following looks the brightest
Q16: One key difference that astronomers use to