Submitted by Psychological_Wheel2 t3_zzii81 in space
Psychological_Wheel2 OP t1_j2bve69 wrote
Reply to comment by ReadRightRed99 in Question by Psychological_Wheel2
Thank you for the thorough answer and some how understanding my stray and incomplete thought, I really appreciate you
ReadRightRed99 t1_j2bvso6 wrote
Something that occurred to me is that usually we create hydrogen from … water. You can do it by different methods, electrolysis being a common one. So I’m afraid we might run into a hydrogen problem before we even get very far along.
Psychological_Wheel2 OP t1_j2bw8go wrote
Could we just “collect” it for the galaxy
EverlastingM t1_j2cgn76 wrote
There's lots of hydrogen in space but it's spread so thin it's basically non-existent. On the other hand, every year we collectively emit 41 billion tonnes of water made from hydrogen that has been locked away in hydrocarbons. Also CO2 which is the part we're usually concerned about.
PuddleCrank t1_j2byq7j wrote
The current cheapest way to make hydrogen is I believe from steam reforming methane.
jimtrickington t1_j2c0giy wrote
Correct. Much less expensive than electrolysis.
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