Radiation from the nearby star Alpha Centauri is observed to be reduced in wavelength (after correction for Earth's orbital motion) by a factor of 0.999933.
Part A: What is the recession velocity (direction) of Alpha Centauri relative to the Sun?
1-Towards the Sun.
2-Away from the Sun.
Part B What is the recession velocity (magnitude) of Alpha Centauri relative to the Sun?