A job that changed me: I ran observatory tours as a student. An eight-year-old’s question taught me two important lessons

I thought the explanation I’d given about black holes was family-friendly; but after what she had said, I had to rethink my examples in the a job that changed me series In the first year of my science degree, I was fortunate to land a job as an astronomy guide at the Sydney Observatory. In my role, I would lead tour groups of about 20 people. We’d look at stars and planets through telescopes.

If the skies were filled from horizon to horizon with clouds, we’d explore more of the universe through a 3D theatre. And to peer beyond what our telescopes could see, we’d pile inside the cosy planetarium, seeing what the light pollution of Sydney and clouds would often obstruct from our view. My favourite object to show in the planetarium was the Hubble Ultra Deep Field image. Before revealing the image, I’d…