YOU save the entire Universe!

You grab the came-out-of-nowhere sword. "When did I get a sword?"
The cow replies to you, "Look at where it came from."
Your cows tail is now your sword. Lucky you found her when you did.
The meteor is coming closer. You take a well-timed leap, raising your sword hacking the meteor in two.
That's not enough! The two big pieces are coming back to earth. What can you do?