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
1 answer
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.