You're going to need 7 Badges to do this. Go to Veilstone City and go to the Top right Corner and go up those big steps. Now there'll be a grunt who's in front of the door and he'll drop something which is a galactic key to open the warehouse, you then go to the top left corner and use it to open the door to the basement. For More Visit http://anir1999.webs.com
after you get galactic key go to the HQ with sattilite dish go to the door
bad guy HQ (team galactic) is in Veilstone City
Beat him in galactic HQ.-
beat the leader.
You get a Master Ball from Team Galactic Boss Cyrus at the Galactic HQ.
Cyrus is in the galactic veilstone HQ and spear pillar.
go and catch them
Fast way is to use a escape rope or telaport
Looker eventually gives you one
You Go to the building next to Galactic Veilstone Quarters and Follow the track until you meet Cyrus, The Leader of Team Galactic
Galctic Headquarters is actually the Team Galactic Veilstone Building, but you'll need a Galactic Key to enter most of the doors.
Cyrus gives you the master ball when you defeat him in Veilstone City Galactic HQ.