Question

question 3 (1 point)
a blue shift of the light from a star indicates that the star
will soon become a giant star
is moving away from earth
is moving closer to earth
will soon become a main sequence star

Explanation:

The Doppler effect for light states that a blue shift occurs when the light source (star) moves toward the observer (Earth), compressing the light waves and shifting their frequency to the blue end of the spectrum. A red shift occurs when the star moves away. The other options relate to stellar evolution, not Doppler shifts.

Answer:

is moving closer to Earth