I have seen it before, but I'll admit I didn't know its name. In my language we call it the "space bus". Maybe my question sounded like I didn't even know what is the Space Shuttle because I'm not a native English speaker and couldn't think of a better way of asking "why does this spaceship look like a plane while others don't?".
Ah I see, my apologies! For what it's worth, your English is so good that it didn't even cross my mind that you weren't a native speaker.
Yes the space shuttle was designed to be partially re-usable. The "plane" bit would come back down to Earth and land on a (very long) runway https://www.youtube.com/watch?v=YOxZsbyjSb8
The same way someone might not have heard of Yuri Gagarin, the first person to reach outer space.[0] In the US, we only hear about the first person to step foot on the moon. I certainly didn't know Yuri Gagarin's name; I had to Google it. I wouldn't even recognize it if I heard it.
Or the One-China policy.[1]
Or that the United States doesn't have a prime minister. Ever told someone you're from the US and been asked who your PM is? They're not referring to your project manager.
Or that they might actually be the Virgin Islands' president without realizing it.[2]
Or any of the following websites, which are among the top 10 most visited websites according to Alexa:[3]
3. Tmall
5. QQ
6. Baidu
7. Sohu
8. Tmall login
9. Taobao
10: 360.cn
In this case, it sounds like the person who made the comment knew of the space shuttle; they just didn't know much about it or recognize it by name. I bet many readers here could say the same for many of the aforementioned items.
Yet if you went to China and asked about Tmall, I bet you'd get some funny looks. I don't really know for sure, though; I'd never heard of it until today. Sure, I know of Taobao, and I could've guessed that the T in Tmall stood for either Tencent or Taobao, but heck if I know what they do. I misspelled it as `Tmail` initially and only realized my mistake after Googling it.
If, as your tone implies, you believe that every teenager knows everything and it's not possible for some of them to have not heard or these things, then you must in fact be a teenager yourself.
I don't think it's unreasonable to be surprised that a teenager (at least, an American teenager) isn't aware of such a thing. They've managed to get through school without once being shown a photo of the space shuttle? Not one blurb? Never seen it in a TV commercial? Photograph?
But I also have to admit I cannot fathom how someone could have not heard of the space shuttle? It was only retired in 2011?