cryogenic

The plan is to dump the waste heat into the cryogenic fuel I believe.

But LH2 is super-cryogenic and a beast to work with, and an entirely different engine.

My money is on it being a compact cryogenic superconductor and the Meissner effect.

Even at cryogenic temperatures there is atomic movement and, necessarily, slow and subtle degradation.

They might not work for long term cryogenic storage, but a ton of pure aluminum has to be worth something up there.

The SLS probably can't do exactly the same because the solid fuel boosters aren't the same as the core which uses cryogenic liquids.

It's a three stage vehicle - 2x solid boosters in first stage, dual-engine liquid motor in second stage and a cryogenic upper stage[1].

I think what you need is a Sabbath cryogenic chamber, so that you don't commit such transgressions as growing stubble.

Next step is to get the Cryogenic Upper stage to actually provide the critical thrust that will finally power it into a GesSyncronous orbit.

In short, cryogenic liquids, especially Hydrogen, is incredibly destructive to any container.

Maybe we can put their DNA in cryogenic storage and reintroduce it someday or something.

So no cryogenic sleep, rather living through the whole thing.

When you "die", your life insurance policy pays out, which is used to fund your cryogenic procedure.