Question

A galaxy that is moving toward the Earth will show:

• A. a red shift in the spectrum
• B. an increase in light years
• C. a decrease in brightness
• D. a blue shift in the spectrum

Answer 1

The correct option is D a blue shift in the spectrum

As galaxy move towards the earth the wavelength decreases and the frequency increase and colour changes to blue and also known as blue shift while opposite is known as red shift.