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When the absorption line of a galaxy shift toward the blue end of the spectrum it means that the galaxy is?
It means the heading towards us, red means it is moving away from us.
Does the colour of a galaxy reflect its distance away from the earth?
No, however, we can determine whether a galaxy is moving towards or away from us, by looking at the shift in its spectrographic analysis. There are "red shifts" and "blue shifts" in spectrographic results. "Blue shifts" indicate that a galaxy is moving towards us, because the wavelength of the light emitted by the galaxy is compressed, causing it to shift to the blue end of the colour spectrum. "Red shifts" indicate that a galaxy is moving away from us, because the wavelength of the light emitted by the galaxy is being stretched towards the red end of the colour spectrum.
What does the Doppler shift in starlight give us?
It tells us whether a star (or galaxy, or other object) is moving towards us, or away from us; and how fast.
Do galaxies shift near or far away from earth?
Most galaxies have a red shift away from us - meaning they are moving away from us. However, the Andromeda galaxy has a blue shift, which means it is moving towards us. In about 2.5 billion years time, the two galaxies will merge.
How many galaxies are approaching milky way galaxy and how many are moving away related to the cosmological red shift?
Most galaxies are moving away from us. Only a few galaxies, which are nearby, are moving towards us.
If an astronomer is observing a galaxy and notices red shift what do we know about the galaxy?
That means the galaxy is moving away from us.
What kind of shift do stars have that are moving towards us?
Rotat
What Evidence shows galaxies are moving in relation to the earth position?
Look at the spectrum of lite from a galaxy if there is a red shift the galaxy is moving away from us or a blue shift the galaxy is coming toward us most have a red shift due to expansion of the universe we are all flying away from another
Explain why some stars in the milky way galaxy have a blue shift Doppler effect and other stars in the milky way have a red shift Doppler?
A blue-shift means an object is moving towards us, a red-shift means it is moving away from us. Blue-shift and red-shift are changes in frequency of the light we receive, due to the relative movement. This is called the Doppler effect.
What does the term blue shift refer to?
It refers to an increase in frequency (and decrease in wavelength) of light or other electromagnetic waves, if the object that emits the waves is moving towards us. The opposite is REDSHIFT, which happens when the object moves away from us.
What can the Doppler effect tell us about in astronomy?
It can tell us whether a star, or a galaxy, is moving towards us or away from us.
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
