Before this becomes another ten page Aku thread, yes, you can have as many accounts as you darn well please. There's nothing stopping you from placing a virtual army at every base in Sirius save the considerable time and effort that would go into such an enterprise, coupled with the not inconsiderable trouble associated with ensuring that they're not deleted due to inactivity.
Be wary of vengence killing though! Rule 5.8*, meaning. While it can be troublesome to track/prove, the resulting sanction can be rather severe.
5.8 A player who was killed in a PvP fight must not re-engage the enemy (player or players involved in the death) with any of the characters on his/her account(s) for 4 hours.
