[quote=@Kalas] This might just be the most intriguing sentence I've ever read. Mostly pertaining to the [i]how[/i] and [i]why?[/i] [/quote] my guess, use liquid helium to pull energy from it, then dump it in the shadow of a close orbiting body. To deal with such a radical temperature shift would take a ton of energy. And why? Superweapon, maybe? Or it could be to make harvesting the hydrogen much, much, cheaper.