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Astronomy Assignment

Notions of Astronomy
Originally it concerned only the visible spectrum, but later the scale was increased to accommodate stars that emit mostly in invisible spectrum. Brighter stars have the smaller apparent magnitude. An absolute magnitude is equal to the apparent magnitude of a star as if it were put 10 parsecs away from Earth
Pages: 6 (1500 words), Assignment
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Milky Way Galaxy
The redshift that Hubble observed, caused by the expansion of the universe, is properly called the cosmological redshift. In other words, the photons that we observe from galaxies in other superclusters are all redshifted because space is expanding. The Doppler redshift results from the relative motion of the light emitting object and the observer
Pages: 7 (1750 words), Assignment
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