Starkiller Base

Of all the fan artworks I've seen, no one has given any attention to the Death Star like thing at the upper corner of the official Force Awakens poster. Then I found out that the Starkiller base, is actually a weaponized, planet, with a destructive power that outmatches its predecessor Death Stars, and probably much larger too.

So no longer would you need to squint your eyes on the poster to see its details. Here it is in all its glory.