Board Thread:General Discussion/@comment-3123266-20140303175822/@comment-2090489-20140523153750

That's what I am saying! Ronan uses the energy to power up his hammer. Because we see in one shot of the trailer Thanos' fist holding a purple energy source. Also I know it was Thanos' hand and not Ronan's hand is because Ronan has 4 fingers and if you look close at the gif with that scene you see 5 fingers, and you also see the gold shoulderpads which Ronan doesn't have and Thanos does have.