His sister, the goddess of death. Steve's first thought, which he doesn't voice, is: you have the worst luck with siblings I've ever seen. That would be rude to say, though. Instead, he gives a sympathetic grimace and reaches over to grip his forearm, a soldier's reassuring clasp.

...of course, his impression of Thor's family situation is only reinforced by the subsequent tale. So Loki is still alive, and got the rule he wanted, at least for a little while. Steve does not like the sound of that, but evidently Loki isn't the problem right now. He gives a little hissing gasp at hearing Mjolnir was destroyed.

The story only gets wilder from there. A red-light-district kind of planet, sounds like, a gladiatorial contest, and the Hulk? "How could he possibly have gotten that far from home?" He wonders aloud. "The Quin wouldn't carry him between planets..."

That's probably a question for Bruce, though. Or the Hulk himself, if Steve dares.

The rest of it makes his heart break for his friend. So much death, so much loss--and Steve has spent plenty of time on the field of war. He knows what that looks like. Even worse, to have to choose, deliberately, the destruction of his home?

Steve doesn't know if he could give that order, himself.

But he knows he's looking at a guy without a country, without a time, without a home. Like himself. And God, but he's never wished that on any other person, let alone a guy as good-hearted as Thor. He's not even sure what to say. 'I'm sorry' seems inadequate.

"What can I do?" He asks. "How can I help?"