The redshift of a star means that _____. a.the star is moving closer to the sun b.the star is moving c.the star is about to explode d.the star is getting farther away

The correct answer is D. the star is getting farther away. When the light has red-shifted, it shows that everything is moving away from a certain point. This is known as the Doppler effect and proves the Big Bang (which would be the center point that everything is moving away from). Just as a 'for your information', blue shift is when the star is moving towards us. Hope I helped :)

The only thing we know of that can red-shift the light of a star is motion away from us.