[Goodness- He knew she loved the stars and science but to have everything memorized down to the decimal points of temperatures and distances is truly mind-blowing!! Maybe Izuku has gotten himself in over his head? Not that he can really talk- Izuku has various useless hero facts crammed up in his head right down to the weight sizes All Might has at various stages of his life and power percentages of every attack, etc etc...]

A sun that bright...?! Do you ever think that maybe there is another world out there that could thrive under a sun that hot and bright?

[He doesn't know how strong an ozone layer would have to be to protect from a sun that hot. But he's going full science fiction here. So much that Izuku suddenly pulls a notebook and pencil out to write down some theories on that.

They start up the stairs to the top observation deck of the tower.]

I wonder if we could see it from the top of the tower, even?