Unverified50% confidenceFactExact time
Hydrogen accounts for only 11% of the mass of a water molecule, and hydrogen is scarce in the inner solar system while oxygen is abundant.
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50%
Confidence
Long-term
Relevance
10/4/2026
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Related Claims
UnverifiedHydrogen constitutes approximately 75% and helium approximately 24% of Jupiter's atmosphere, which represents the fundamental challenge of floating in gas giants.61% similarUnverifiedThe primary source of hydrogen in the Haber-Bosch process is natural gas.61% similarUnverifiedCurrently, approximately 96% of the world's industrial hydrogen comes from the steam methane reforming process, which emits approximately 9–12 tons of CO₂ per ton of hydrogen produced.60% similarUnverifiedThe electricity-to-hydrogen conversion efficiency of water electrolysis is typically between 60% and 80%.60% similarUnverifiedApproximately 99% of the hydrogen in the solar system outside the Sun is locked in gas giants, primarily Jupiter and Saturn.59% similar
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