Inspired by [1] to post. It's an old video but I think it's exceptionally well-made and deserves to be shared.

There's also a French version [2] but francophones say it's hard to comprehend due to the accent (and all French is hard to comprehend for me anyway so I wouldn't know the difference).

[1] https://news.ycombinator.com/item?id=43961226 Universe expected to decay in 10⁷⁸ years, much sooner than previously thought

[2] https://www.youtube.com/watch?v=DynLBcmOTGs

Those posthumans will be roasting their marshmallows around black holes long after the song in this video ends.