If star X has a greater blue-shift than star Y, we conclude that star X is

Select one:
a. moving away from star Y
b. moving toward star Y
c. moving away from Earth faster than star Y
d. moving toward Earth faster than star Y

Question

If star X has a greater blue-shift than star Y, we conclude that star X is

Select one:
a. moving away from star Y
b. moving toward star Y
c. moving away from Earth faster than star Y
d. moving toward Earth faster than star Y

aaronq · Answer

blue shifts occur when the star moves towards earth

anonymous · Answer

i believe it is d

aaronq · Answer

the magnitude of the shift indicates the speed