01theuniverse

Changes through time-the Universe. http://en.wikipedia.org/wiki/White_dwarf

The **Doppler Redshift** results from the relative motion of the light emitting object and the observer. If the source of light is moving away from you then the wavelength of the light is stretched out, i.e., the light is shifted towards the red.

Doppler effect media type="youtube" key="Man9ulEYSgk?fs=1" height="385" width="480"

Ask an astronomer-Doppler and Red Shift media type="youtube" key="FhfnqboacV0?fs=1" height="385" width="480" Red Shift and the Universe media type="youtube" key="3kw4id0NvJ0?fs=1" height="385" width="640" A great video courtesy of Ms Pemberton media type="youtube" key="17jymDn0W6U?fs=1" height="385" width="480"

Big Bang and the Expansion of Universe

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