Apparently it has the be the number of the level of the Latias or Latios.
space :)
to go to space
in a rocket
It was a German rocket in 1944.
they launche Pokemon in the rocket, but if the number of successfull launches reaches100 talk to him again and he will ask you if you want to go into space. there you will find deoxys
the pressure from the the rocket's fuel thingy makes the rocket go up. pretty soon, the rocket is in space.
with a rocket ship?
Saturn rocket
2011
In a big enough rocket.
after completing the whole game, go to the space center and speak to the man who usually says 'rocket number... has been launched etc.' and when you go back he will say would you like to go on rocket...., sayt yes.
u will meet jirachi when the rocket count reaches 100 and u go into space,