I've never heard the term hope punk but I do love this

It's punk to care about people

Interstellar was a phenomenal movie. I didn't realize that it was a book. I wish I would have read it. I find it hard to read a book after seeing the movie though, I just end up playing the movie in my head.

Chambers book sounds interesting as well. Has a lot of themes that I generally like in a book - survival, existential horror lol