There is no way to go into space in any of the games.
You can't catch Mew if not through a official Nintendo event or using a cheating device.You cant catch mew. You can only catch mew if you hack.
down the hierro island you can catch a mew in level 9.
You dont catch mew You catch mewtwo in cerulean cave
You cannot catch mew unless you have a cheating device such as game shark. If you do not have the cheating device, then im afraid its impossible to catch mew in emerald. :(
You cannot catch Mew in "Pokémon Ruby."or you can get mew-two in fire red or leaf green.
go to how to get mew on sapphire.com
If You Meant To Catch To Mew,No.
You cannot catch Mew in Pokémon Diamond, in order to get Mew in your game, you will need to trade for one via Union Room wireless connection.
Sorry you can't catch mew, once you advance in the game you can catch a legendary/special mewtwo (evolved mew).
You cannot catch Mew in the Cerulean Cave because it can't be found there.
You can't catch mew on leafgreen you need gameshark codes for that
You can't catch Mew in SoulSilver. However, you can migrate from a different game.