It's possible only 2 of the 16 accepted matriculated. Anyway, in general they'll presumably accept anyone with the necessary qualifications etc (e.g. top tier grades in everything, some extracurriculars particularly indicating a sustained interest in science and engineering, very good SAT/ACT scores, references, TOEFL or whatever scores etc, etc,) however they may not be able to provide funding for all international students. The country you're from won't (or at least, shouldn't) make a difference to your application unless there is some specific programme in place from your country in the first place.
Vanadium is right though, all the relevant info is available on the web generally already, and no one here will have any secret knowledge that will guarantee your application is successful. He's also right to note that successful prospective MIT students are probably enterprising enough to do at least a modicum of research themselves before turning to others for help.
More generally, Stanford, CalTech, Imperial College London, UCL, Cambridge, Oxford, and the Ivy League are all top tier universities generally and as far as I'm aware all offer an Aerospace programme in one way or another. Additionally worth considering is École Polytechnique, another top tier institution with links to lots of aerospace things (there is a lot of aerospace industry in France), however it has somewhat different entrance requirements (you do not enter at the end of high school). EP also doesn't do aerospace directly, I think you do mechanical and you can choose aero themed modules.
As above all the relevant application procedures and details of the programmes are available on their webpages variously (although Oxbridge can be somewhat confusing with regards to colleges and the general engineering pattern, as well as the weird names they have for some things). I would recommend starting there, and going through the various pages until you know everything there is to know about the admissions procedures for these programmes from the webpage before asking on forums.