Question: Imagine that a massive planet orbits a star and causes the star to wobble back and forth along the line of sight. Assume that the

Imagine that a massive planet orbits a star and causes the star to wobble back and forth along the line of sight. Assume that the star+planet system on average does not get closer or farther from the Earth. What will the spectrum observed from Earth show? a redshift. a blueshift. alternating redshifts and blueshifts. no Doppler effect

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1. What is the meaning of the information we are collecting?

3. How much information do we need to collect?