2007-04-08 08:49:00 · 2 answers · asked by Mandy 1 in Science & Mathematics ➔ Astronomy & Space
Redshift (usually one word) is an aspect of the Doppler effect. When a wave source is moving away from the observer, the observed wavelength is increased. When the wavelength of a visible light wave increases, it moves towards the red end of the spectrum. So redshift means that a star is moving away such that its light appears more red. Stars within the Milky Way galaxy are never moving fast enough to cause significant redshift (or blue shift, caused by a light source moving towards the observer), but we can observe the phenomenon with distant galaxies that are moving away at significant fractions of the speed of light.
2007-04-08 08:53:24 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
here u go there is a lot of info not sure what u need
2007-04-08 08:53:10 · answer #2 · answered by raindovewmn41 6 · 0⤊ 0⤋