Its in the town of Veilstone
In the galactic warehouse to the left of the Galactic HQ
green portal
It is located in veilstone city..where maylene is located
you go to sunyshore city and beat the gym leader
Team galactic isn't in Pokemon black!
You will need Galactic key and this how to get Galactic key you will need to talk to a Galactic team mate by the Galactic HQ.
You get a masterball after you beat Cyrus in the galactic HQ
after you get galactic key go to the HQ with sattilite dish go to the door
Veilstone galactic HQ
Cyrus gives it to you in the team galactic HQ in veilstone city.
bad guy HQ (team galactic) is in Veilstone City
Go to the lake, which is nearby. Beat the guys. Then go to the team galactic HQ in veilstone. Take it from there