I apologize if this question was asked before.
In the halo 3 opening, master chief is seen as a fireball flying down to earth, Cortana says she chose master chief due to luck, and at that moment master chief abruptly changes directions and hits the earth. shortly after, he is found by a few marines.
How did master chief change directions so abruptly? I wouldn't think that would be possible.
(sorry about the grammar, too lazy to fix)