Originally Posted by
compressor stall
There's not that much helium left in the world. It keeps on floating into outer space as we tract it, and we have not got a pipe to the sun to syphon off some more.
Unless we get the fusion thing sorted to create unlimited energy, the economic lifespan of a craft like this has to be limited from that point alone.
Factually incorrect.
Oil will run out before helium.
That Dire Helium Shortage? Vastly Inflated | WIRED
https://www.sciencenews.org/article/...ot-running-out
Forbes Welcome
https://www.newscientist.com/article...nners-running/
Helium shortage could be solved by new life-saving discovery | Science | News | The Independent