Spoiler Thread: Avengers Infinity War

So, I only saw the movie once, but I have a question.

Is Thanos dead? He was hit with a mortal wound by Thor. The next scene we saw with him, he is talking to little Gamora in the soul stone, saying it cost him everything. Did he snap his fingers, then die?

no Thanos is not dead. he snapped his fingers, killed half the universe, healed himself and left to a planet to watch a sunrise free from the anxiety that the universe was killing itself from its own overpopulation.