How does the frequency of light from a star that is moving toward Earth appear to us?

1 Answer
chandramohanPanakkal
Aug 6, 2016

Stars have color depending upon their temperature.

Explanation:

When star is coming towards Earth its light will be blue shifted (Doppler shift to wards blue end). BY taking spectrum astronomers can calculate its speed and temperature.
Blue end of spectrum means higher frequencyenter image source here .
picture credit snews.bnl.gov.

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