Astronomy

When I was a kid, the moon was called Luna. There were lunar expeditions and lunanauts, and the Russians had Lunokhod and so on and so forth. Since I moved to the US, I've noticed that most people call it "The Moon". I've even seen someone wonder on the internet why the Moon doesn't have a name. Today, I saw a piece in Universe Today about what if the Earth had two moons? Let's call the other one "Luna", the author writes, apparently unaware that the first one is already called Luna.

Worried, I checked Wikipedia. It says the moon's name is The Moon. I can find barely any mentions of lunanauts in Google (and my spellchecker doesn't recognize it) and although I see things like "lunar surface", Wikipedia says that's just the adjective from the Latin name of the Moon. 

I haven't been this disturbed since I learned that the word I learned for "fart" as a young kid - poop - didn't actually mean fart to anyone else, unless it was that day that I learned the lumpy vegetables I called turnips were actually rutabagas, and no-one else in the adult world was under the impression that they were turnips. 

So what happened? Did I switch timestreams or move to an alternate world or something? Did I go back in time and step on a butterfly? What am I going to find out next?

If it's that the sun's name isn't really Sol, I give in.  I know that Mars - it is still called Mars, right? - isn't called Ares, and I'm pretty sure the other famous one is called Venus and doesn't have a sekrit name only I know about. 

ObFuturama:

Professor: "I'm sorry, Fry, but astronomers renamed Uranus in 2620 to end that stupid joke once and for all."
Fry: "Oh. What's it called now?"
Professor: "Urectum."