I suppose aliens must be unheard of or uncommon where you are from. Where I'm from, there are many different species calling different planets home- of course, humans are more common than any alien species.

[There may be a lot of aliens, but there are definitely more humans. In the Empire, especially, given that aliens are barely seen as people and are usually slaves. He's managed to claw his way out from that, but it's still many people's fate.

Nothing he needs to get into now, at any rate.]

You are correct though- I have heard of earth by now, but either it does not exist where I am from, or we simply haven't come into contact with it.