Data centers in space.
I haven’t run the numbers, and maybe there a case for it but…
SpaceX is mostly putting stuff in low orbit. A higher orbit is less than 1/3 as efficient in terms of lift and capability.
A data center, to be useful, has to be in geosynchronous orbit - or there have to be a thousand of them, and if your data is on the one that just few past you have to wait another hour for it to be back. Unless all you’re doing is manipulating the numbers you’re beaming up, which seems to imply you also need a data center on planet earth.
But let’s ignore that for the moment. Data centers, as we all have learned (endlessly) require vast amounts of electricity. Solar panels, even the best, will only get you so far. They work for minimal applications, maybe, but data centers?
They also require vast amount of water for cooling, but let’s say that being in cold outer space takes care of that for you. Not to be a wet blanket, but I know the ISS requires significant cooling when it’s in the sun because there’s no atmosphere to take away the heat caused by the solar radiation. (It also requires heating when it’s in shade, so maybe there’s a way to “heat sink” and bring it back later?)
And then there’s latency. Maybe not a big deal if you’re just using the data center to, you know, hold data, but if you’re doing anything real-time like customer transactions or missile calculations that 2 second round trip is a real killer.
I’m not even going to get into lofting racks of chips into space requiring thousands of tons of lift, not to mention assembling them in space into some kind of coherent module, but maybe that’s all been figured out.
Or maybe it’s all just super prep for the upcoming SpaceX IPO, where Musk investors don’t bother with mundane and practical details in favor of grand visions of the future. Dunno. It’s worked out well for them so far, I’d have to admit - but at some point reality sets in (see: predictions of FSD for the past decade, dancing robots, etc.)
Good luck on this one boys, but I think I’ll sit it out. (While not dismissing the idea that there is a nicely profitable business in satellite launch and other “spacey” ventures as may come about. Humans transporting to Mars? Not one of them, probably.)