I live in Sri Lanka.. can i get into Oxford ?

im in sri lanka... a small country below India.. I am 18.. and my pion is simply physics... i want to learn more... and all i know is oxford is the place to be. so is it possible ? if so what should i have/qualified to get in /... are there any scholarship methods..if so can anyone please deirect me in the right way as i am complete lost at the moment.. :( :(