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The light from Andromeda is blue shifted because that galaxy is approaching ours. We will eventually collide, as we have probably done in the past.

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What galaxies have a blue shift?

There are about a 100 known blue shifted galaxies. The most well known, is the Andromeda Galaxy.


The Andromeda galaxy unlike most other galaxies has?

It has the same things the other galaxies have i.e. stars planets etc . It's just that it is very big . Comments : I think the answer may be that Andromeda gives out light that is blue shifted instead of the red shift for most galaxies. So the answer is " a light spectrum that's blue shifted".


Why are the spectra of galaxies shifted towards the red end?

Because - in most cases - they are moving away from us.However, the Andromeda Galaxy is blue shifted showing it is moving towards us.


What is happening to the distance between the Andromeda Galaxy and the Milky Way?

We can tell the distance is decreasing because the light from Andromeda is blue shifted. That galaxy is closing in on us (or vice versa) 500,000 km (300,000 miles) per hour.


What is the Andromeda Galaxy's red shift?

The Andromeda Galaxy red shift is -301 km/s Which actually means it is blue shifted and is heading towards us at about 100 to 140 kilometres per second


Does the speed of light allow the Andromeda Galaxy to emit a blue shift?

There is some blueshift in the Andromeda galaxy as it is moving toward us. The speed of the Andromeda Galaxy relative to the sun is about 300 kilometers per second or about 0.1% the speed of light. The blueshift would be detectable by instruments but not to the human eye.


Why is light from the Andromeda galaxy is affectedly blueshift?

because when the blue shift hits the red shift they complete a reround in the galxey


When a star or galaxy moves quickly toward an observer the light it emits will appear?

It will be "blue-shifted". That is, the wavelength of the light will appear to be shorter and so more blue.


The Andromeda galaxy show is a blue shift in its spectra What does this tell us about its motion relative to the earth and the rest of the soloar system?

The blue shift in the spectrum of the Andromeda galaxy indicates that it is moving towards the Earth and the rest of the solar system. This is because the light waves from the galaxy are compressed as it moves closer, causing the wavelength to shift towards the blue end of the spectrum.


If a galaxy is moving towards the earth what direction does its spectrum move?

If a galaxy is moving towards the Earth, its spectrum will be blueshifted. This means that the wavelengths of its emitted light are compressed, resulting in a shift towards the blue end of the spectrum.


What is the importance of the light red shift in determining the age and motion of stars?

Red shift is of virtually no importance in determining the age of stars within our galaxy or local group. But the red shift is crucial for measuring relative velocities of those stars with respect to us. Stars approaching us are blue shifted, such as the stars in the Andromeda Galaxy. We can also determine which direction the galaxy is spinning, as the light of stars one one side will be shifted less than the light of the stars in front, or on the other side. Starlight from galaxies well beyond our local group are uniformly shifted towards the infrared end of the visible spectrum, varying with the distance of those galaxies from us. The further away they are, the deeper red the light is from them, indicating the greater their recessional velocity. I cannot think how stellar age might correlate with red shift.


How does red shift lead to the big bang theory?

The red shift is a Doppler effect for visible light that implies an object is moving away from you. The blue shift is a Doppler effect for visible light that implies an object is moving towards you. Stars are distrbuted within galactic clusters. If a star is red-shifted, the distance between us and that galaxy is increasing. If it is blue-shifted, the distance between us and the galaxy is decreasing. All galaxies outside our local galactic cluster produce light that is red-shifted; and the greater the distance between us and these outside galaxies, the greater the red shift. That the size of the red shift depends on the distance is considered isotropic (or the same in all directions), meaning the distance between our local galactic cluster and all other galactic clusters is increasing at the same ratio based on distance from us. These distant galactic clusters, demonstrating red shift, are supportive evidence that these outside galaxies are moving further apart consistent with the Big Bang Theory. While the red shifted starlight is considered supportive evidence of an expanding universe, there are a few examples of blue shifted starlight within our Local galactic cluster. The Andromeda Galaxy is moving towards within the Milky Way galaxy, so when it is observed from Earth, its light is blue shifted. Any even within our own Milky Way galaxy, the Barnard Star is also moving towards Earth and appears to have a slight blue shift.