If you like to build something to last in Star Wars: The Old Republic, don’t build on Alderaan. Sure, it looks pretty right now, but in about 3000 years the whole place is going to blow up. Then again, your character in SWTOR probably won’t live that long, so instead of focusing on that fact you can probably focus on things like the design of the Alderaan stronghold as related via game designer Mark Taylor and environment artist Emily Henderson. The new stronghold went live in patch 6.1, if you missed it.the whole process on the official site.
Source: Official Site