Kijavítanátok az angol levelet amit írtam?

Altough it's been over ten years since we last met

A "can't believe that you married"-nél nem tudom biztosra, hogy kell-e a "that"

You asked what I was doing nowadays

I know you are/you're busy

If I will go back to the Earth

Ezeket találtam hibának, de nem garantálom, hogy minden jó és mindent megtaláltam

Dear John,

How amazing it is to hear from you. I was so surprised.

Of course, I remember you, although it's been over ten years since we last met. How did you get my email address?

It was great to hear your news. I can't believe you married Esther. You have loved her since childhood. It is so fantastic! You asked what I'm doing nowadays. Do you remember? I always wanted to be an astronaut, and I am an astronaut! I am writing from the International Space Station now! The view is just amazing! I enclosed some pictures. How do you like then? Could you have ever imagined it?

I know you're busy, but I would love to visit you soon after when I get back to Earth.

All the best

Your old friend