Which statements accurately describe the Doppler effect? Select three options.

a. It is used to learn about the behavior of the universe.

b. It was used by Hubble to measure velocities of galaxies.

c. It indicates galaxy motion through light wavelengths.

d. It indicates a galaxy moving toward Earth through red shift. It indicates a galaxy moving away from Earth through blue shift.

Answer:The answer is A, B and C

Explanation: it can be use to learn universe behavior, it is also use for the measurements of velocity of galaxy, and is can also be use to indicate, galaxy motion.

Doppler effect, measures the speed which star and galaxy are moving away from us or towards us. It shows the color of wavelength to be either red shift or blue shift.

A, b, c

Explanation:

Doppler effect can be used to determine the speed at which stars and galaxies are moving towards or away from us. This mechanism can be either blueshift or redshift.

Redshift occurs when light that is observed to be coming from an object is moving away and it wavelength increases proportionally or moved towards the red spot of the spectrum. This mechanism is vice versa for a blue shift. Because blue light's frequency is higher than that of red light, the spectral lines of an astronomical light moving towards us displays a blue shift and the one moving away exhibits a red shift.