Astronomers studying the light from calcium atoms located in agalaxy in the cons
ID: 1756775 • Letter: A
Question
Astronomers studying the light from calcium atoms located in agalaxy in the constellation Boötes find that the spectrallines are shifted toward the red end of the spectrum. The redshiftindicates that the galaxy is moving away at a speed of 3.9 ×106 m/s. What is the distance (in light • years) tothe galaxy?a. 6.6 × 104 light• years
b. 8.4 × 106 light• years
c. 1.1 × 107 light• years
d. 4.7 × 109 light• years
e. 2.3 × 108 light • years Astronomers studying the light from calcium atoms located in agalaxy in the constellation Boötes find that the spectrallines are shifted toward the red end of the spectrum. The redshiftindicates that the galaxy is moving away at a speed of 3.9 ×106 m/s. What is the distance (in light • years) tothe galaxy? 6.6 × 104 light• years 8.4 × 106 light• years 1.1 × 107 light• years 4.7 × 109 light• years 2.3 × 108 light • years