Pokemon Emerald Gameshark Shiny Mew I Have Some Questions About Pokemon For My Sister....?

I have some questions about pokemon for my sister....? - pokemon emerald gameshark shiny mew

1. Can you get Mew without a gameshark or cheat in Pokemon Emerald?
2. Can we really go to space in Pokemon Emerald? If so, how?
3. Also someone told me that you can make Pokemon Shiny, but I forgot, and my sister wants to know if we really ... she is angry because I forgot, but if you like it?
I think it is now. Please help if you can thank you for it and ... (: