Even though the hubble law for galactic motions indicates that the spectra of all galaxies should show redshift as a consequence

Question

vladimir1956 [14]

3 years ago

10

Even though the hubble law for galactic motions indicates that the spectra of all galaxies should show redshift as a consequence

of the general expansion of the universe, the andromeda galaxy m31 appears to show a blueshift in its spectrum. why is this?

Physics

1 answer:

kenny6666 [7] · Answer 1 · 2022-05-08T20:37:32+03:00

kenny6666 [7]3 years ago

6 0

This is because Andromeda is headed toward the Milky Way. Eventually it will collide with our galaxy. When something is moving toward you it's light appears blue or, or blueshifted.