I mean, the stars in this visualization are not real, they are "virtual" in the sense that they are a digital replication of something real in our computers.

You're right, it's probably a typo. But the typo at least doesn't make the title incorrect, just changes the focus a bit. Most things in our computers are "virtualized".

Edit: seems people are thinking that this comment is trying to "correct" something. It's not. It was a failed attempt to bring humor to a typo that might as well not be incorrect. No need to further try to prove how socially inept I am.