How do earths movements affect our view of the star

As the Earth makes a full revolution, we see the sun and no stars, except the sun, and when our section of Earth is facing away from the sun we can see other starts.
Also, as the Earth revolves around the sun, certain stars can be seen and certain stars go out of view.

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absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

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