Dear Diary, 
I've just finished reading a great book at school. I haven't read anything as good as that for a long time! It is a book about the solar system. It is so good that I've already askedthe library to keep the next book for me! In the book, it says that astronauts have been to Mars and even to Jupiter. I've never read that before! I think they're keeping it secret! 
I haven't met anyone famous in my life but I hope one day I'll meet a real astronaut. I've written to NASA to ask them for more information about astronauts and space. I hope they write back. They haven't yet, but I'm sure they will soon. 
Best wishes,
Mary