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How do you use spectral lines to determine if a galaxy is moving towards earth or away from earth?
Wiki User
∙ 6y ago
The spectral lines move towards one direction, or towards the other direction, depending on the relative speed.
Wiki User
∙ 6y ago
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Does the velocity of a star toward or away from earth determine measuring the shift of its spectral lines?
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
How would the spectral lines of a star change when moving closer towards earth?
It would change by shifting to the wavelength blue.
Why are the blueshift and redshift useful in the study of the universe?
Redshift and blueshift are manifestations of the Doppler effect. This lets us determine whether a star, or a galaxy, is moving towards us, or away from us.
What would be evidence of a galaxy moving towards earth?
A blueshift in the galaxy's spectrum - that is, the frequency of the light, as observed by us, is greater than when it was emitted.
How do astronomers determine if a star is moving towards or away from us?
They use a tool called a SPECTROSCOPE.
Does the velocity of a star toward or away from earth determine measuring the shift of its spectral lines?
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
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 shift is a galaxy moving towards us?
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What direction will spectral lines move if an object is moving towards you?
They will be blueshifted, that is their wavelengths will be shortened and their frequencies increased.
How do astronomers determine the speed at which a galaxy is moving?
By examining its spectrum, and identifying absorption lines in it. Lines are shifted toward shorter wavelength if the object is moving towards us. They're shifted toward longer wavelength if the object is moving away from us.
How would the spectral lines of a star change when moving closer towards earth?
It would change by shifting to the wavelength blue.
If a galaxy is moving towards the earth what direction does its spectrum move?
It will be blue shifted
Why are the blueshift and redshift useful in the study of the universe?
Redshift and blueshift are manifestations of the Doppler effect. This lets us determine whether a star, or a galaxy, is moving towards us, or away from us.
Why are redshift and blueshift useful in the study of the universe?
Redshift and blueshift are manifestations of the Doppler effect. This lets us determine whether a star, or a galaxy, is moving towards us, or away from us.
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 would be evidence of a galaxy moving towards earth?
A blueshift in the galaxy's spectrum - that is, the frequency of the light, as observed by us, is greater than when it was emitted.
Why is the Andromeda galaxy moving toward earth?
Sorry, Andromeda and earth are moving away from each other, not towards each other.
