Question

What are redshifts?

(1 point)
galaxies that are moving closer together
galaxies that are moving farther apart
galaxies that are growing in size
galaxies that are shrinking

Answer 1

[AI-generated answer — Bot GPT 3.5]

Redshifts refer to galaxies that are moving farther apart. This phenomenon occurs due to the expansion of space, causing galaxies to be pushed away from each other, resulting in a shift towards longer wavelengths in the light they emit.