This interview with astronomer Sperello di Serego Alighieri, a descendant of Dante Alighieri, gets into interesting territory.

Half the time it seems to me that things like string theory are attempts to get around the implications of the universe’s having a beginning, because string theorists don’t want it to.

The thing with those kinds of theories – you can call them theories, but it’s more speculative philosophy than science.

Because it is in principle untestable.

Yeah, it is not testable. It’s the same thing as multiverse theory, maybe there are many universes, OK, we can talk about it, but so what? It’s not testable. But even then, in a multiverse scenario, it is entirely possible to ask whether someone can have created all these universes. I don’t think that it is possible for science to say that God does not exist. But also the other way: religion should not close down inquiry into how the universe developed; this is up to scientists.

Then they get into Galileo and how Jesuits reformed the Chinese calendar.