Katie-
I hadn’t thought about sharing opinions – and it such a good way to connect space to ethics.
Science opinions should reference facts -so could you ask children to explain why they think a certain way? I’m often asked if I think aliens exist and I answer “Yes and No” Yes – there are so many stars in so many galaxies that even if the chance of life on another planet was 1 in a million, when you have 200 billion (which is 200, thousand million) in just our galaxy, then that is 200,000 possible planets with life. And there are 2 trillion galaxies.
The No is because space is big, so I don’t think the Earth has ever been visited by aliens (even though I love alien science fiction!)