How long does the light come to us from Antares (and Scorpio), if the distance to it is 52.5 pc?

decision
t = 52.5 * 3.26 = 171. Approximately 171 years.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.