After 45 years of serving the H.R MacMillan Space Centre, Harold, the star projector is about to retire.

Over the course of the summer, the planetarium will install a full-dome digital projection system which has been adopted by other planetariums across Canada.

Fans of Harold can follow him on Twitter @harold_hrmsc

You can join host Stephen Quinn On the Coast every weekday from 3 p.m to 6 p.m on CBC Radio 1, 88.1 FM/690AM.