Board Thread:General Discussion/@comment-1031724-20161216073105/@comment-27020644-20161218011822

KillRoy231 wrote: It was said that a mortal will die if they touch an Infinity Stone, unless it's a group of people controlling it for a limited time. Red Skull held the tesseract in his hand. It killed him and transported his remains to Yggdrasil, though there could be something deeper we don't know about, but then, Cap already got his third film People can touch the Tesseract. That's why Fury could touch it. We don't know if he died or just teleported on accident.

Or, and this is just one of my theories, maybe Thanos tried to get the Space Stone to teleport to him and it teleported Red Skull who was holding it.

But he could return in Infinity War or Avengers 4 so it really doesn't matter that Cap got his third film.