As a kid, I was fascinated by stars and planets. The only thing that changed in that aspect is that I now refer to it as astronomy.
In my third year of high school (mavo), I attended a facultative course astronomy that was given by our physics teacher (Natuurkundeleraar). I scored a 9.3/10 for the final test and recieved a certificate.
Years later, I started the bachelor degree course Chemistry at the Hogeschool Rotterdam (hro). Provided the opportunity, and still fascinated by the subject, I followed another facultative course, which I also passed.