Bríd,
inquiry learning in the context of this course refers to the Framework for Inquiry, so I am glad to see you use a prompt to engage the children. With stars it can be tricky to carry out an investigation, so, children in an older class might pose a starter question that they can then explore by research.
So, a child might share that they know that some stars look different brighter in the sky. Another child might say “I think that is because they are different distances away – I have noticed that a car headlight looks dim if it is far, but brighter if closer”. They could then check data on the distance to stars vs how bright they look to see if this prediction is correct.