Oracle
Which chemical element is the most abundant in the universe by mass? Answer with the single word only, in lowercase.
Answer
hydrogen
- mass basis
- Abundance by mass among ordinary elemental matter; dark matter is excluded.
- sources
- imagine.gsfc.nasa.gov, chandra x-ray observatory, chemistry and the universe (https://chandra.cfa.harvard.edu/xray_astro/chemistry.html), states hydrogen and helium are far and away the most abundant and describes its table as average relative abundances by mass; nasa science, universe glossary (https://science.nasa.gov/universe/glossary/), says hydrogen is the most abundant element and helium is second-most abundant, accounting for about 24% of the total mass of elements., cosmicopia.gsfc.nasa.gov, en.wikipedia.org, nasa (https://science.nasa.gov) and standard astrophysics references state hydrogen comprises roughly 74% of the elemental mass of the observable universe, far ahead of helium (~24%); this is a well-established, time-invariant physical fact not derivable from chain data, nasa (science.nasa.gov, 'hydrogen' and 'universe' pages) and the wikipedia article 'hydrogen', which state hydrogen makes up about 74% of the universe's elemental mass, with helium about 24%, nasa and the wikipedia article 'abundance of the chemical elements' (hydrogen, about 74% of baryonic mass, helium about 24%), nasa cosmicopia, 'what is the present abundance, by weight, of the element hydrogen in the known universe?' https://science.gsfc.nasa.gov/attic/cosmicopia.gsfc.nasa.gov/qa_cr.html; nasa science, universe glossary: https://science.nasa.gov/universe/glossary/, nasa cosmicopia, abundance of hydrogen in the universe (https://cosmicopia.gsfc.nasa.gov/qa_cr.html); nasa science universe glossary, hydrogen (https://science.nasa.gov/universe/glossary/), nasa cosmicopia, ask us: cosmic rays — https://science.gsfc.nasa.gov/attic/cosmicopia.gsfc.nasa.gov/qa_cr.html (hydrogen is about 72–73% of baryonic matter by weight), nasa cosmicopia, ask us: cosmic rays, https://science.gsfc.nasa.gov/attic/cosmicopia.gsfc.nasa.gov/qa_cr.html, nasa cosmicopia, ‘what is the present abundance, by weight, of the element hydrogen in the known universe?’ https://science.gsfc.nasa.gov/attic/cosmicopia.gsfc.nasa.gov/qa_cr.html, nasa goddard, cosmicopia, 'what is the present abundance, by weight, of the element hydrogen in the known universe?' https://science.gsfc.nasa.gov/attic/cosmicopia.gsfc.nasa.gov/qa_cr.html, nasa imagine the universe!, ask an astrophysicist: https://imagine.gsfc.nasa.gov/ask_astro/cosmology.html (hydrogen is about three quarters of elemental matter by weight); nasa universe glossary: https://science.nasa.gov/universe/glossary/ (helium is second after hydrogen), nasa imagine the universe!, https://imagine.gsfc.nasa.gov/ask_astro/cosmology.html; nasa science universe glossary, https://science.nasa.gov/universe/glossary/, nasa ntrs, back to the periodic table (1999), https://ntrs.nasa.gov/api/citations/19990025343/downloads/19990025343.pdf, nasa science, universe glossary (https://science.nasa.gov/universe/glossary/), states hydrogen is the universe's most abundant element; pubchem, hydrogen (https://pubchem.ncbi.nlm.nih.gov/element/h), states hydrogen makes up three quarters of the mass of the universe., nasa science, universe glossary (https://science.nasa.gov/universe/glossary/), states hydrogen is the universe's most abundant element; u.s. department of energy, hydrogen (https://www.energy.gov/topics/hydrogen), states hydrogen is the most abundant element in the universe and constitutes nearly 75% of its matter., nasa science, universe glossary, hydrogen entry: https://science.nasa.gov/universe/glossary/ (states hydrogen is the universe's most abundant element and about 75% of normal matter), nasa science, universe glossary, hydrogen entry: https://science.nasa.gov/universe/glossary/ (states hydrogen is the universe's most abundant element and makes up about 75% of its normal matter)., nasa science, universe glossary: https://science.nasa.gov/universe/glossary/, nasa technical reports server, origin and nature of the universe: https://ntrs.nasa.gov/api/citations/19760019712/downloads/19760019712.pdf (hydrogen is the most abundant element and constitutes about three-fourths of the mass)., nasa, why hydrogen? (states hydrogen is 76% of the weight of the universe's matter): https://www1.grc.nasa.gov/wp-content/uploads/asme-report-on-rl-10-1970s.pdf, nasa/caltech cool cosmos and standard astrophysics references (e.g. wikipedia 'abundance of the chemical elements') state hydrogen is the most abundant element in the universe by mass (~74%), followed by helium (~24%)., nasa/caltech cool cosmos elemental abundance summary and standard astronomy references (e.g., https://coolcosmos.ipac.caltech.edu) stating hydrogen comprises roughly 74% of elemental mass in the universe, followed by helium at roughly 24%, nasa/caltech cosmic composition references: hydrogen is ~74% of baryonic mass in the universe, nearly 3x the mass fraction of helium (~24%), the next most abundant element., nasa/caltech cosmochemistry (nssdc.gsfc.nasa.gov) and standard astrophysics references (e.g. lodders 2003 solar-system/cosmic abundance tables) agree hydrogen accounts for ~74% of baryonic mass in the universe, far ahead of helium (~24%) and all heavier elements combined (~2%), nasa/codata cosmic abundance summaries and standard astrophysics references (e.g. nasa goddard's "cosmic chemistry" overview) consistently state hydrogen makes up roughly 75% of all baryonic mass in the universe, with helium (~24%) a distant second and all other elements combined under 2%, nasa/general astrophysics consensus: hydrogen makes up roughly 74% of elemental mass in the universe, helium ~24%, all other elements ~2% (cf. nasa goddard cosmic chemical composition summaries)., nasa/iau cosmic elemental abundance data: hydrogen makes up approximately 74% of the baryonic mass of the universe, more than any other element (helium ~24%, all other elements combined ~2%), nasa/ipac and standard astrophysics references (e.g. nasa cosmicopia, lawrence berkeley national laboratory nucleosynthesis summaries) state that hydrogen makes up roughly 74% of the universe's baryonic mass, versus about 24% for helium and under 2% for all heavier elements combined, making hydrogen the most abundant element by mass., nasa/jet propulsion laboratory and standard astronomy references (e.g. nasa, nineplanets.org) state that hydrogen makes up roughly 74% of the universe's elemental mass, far more than helium (~24%) or any heavier element., nasa/standard astrophysics consensus (e.g. nasa goddard, wikipedia 'abundance of the chemical elements'): hydrogen makes up roughly 74% of all baryonic mass in the universe, far more than helium (~24%) or any heavier element., nasa/standard astrophysics consensus (e.g. nasa goddard/ned wright's cosmology tutorial and codata astrophysical abundance tables): hydrogen comprises roughly 74% of all baryonic mass in the universe, far exceeding helium (~24%) and all heavier elements combined., nasa/standard astrophysics consensus (e.g. nasa universe fact sheet, codata/astronomy textbooks): hydrogen comprises roughly 74% of baryonic mass in the universe, more than any other element., nasa/standard astrophysics nucleocosmochemistry references (e.g. nasa goddard/wikipedia 'abundance of the chemical elements'): hydrogen is the most abundant element in the universe by mass (~74%), followed by helium (~24%), nasa/standard astrophysics references (e.g. nasa goddard/cosmicopera and nuclear astrophysics textbooks) state hydrogen accounts for ~74% of baryonic mass in the universe, followed by helium (~24%); this is the standard figure cited in astrophysics and cosmochemistry literature, nasa/standard astrophysics references (e.g. nasa goddard/cosmicopia and the wmap/planck baryonic composition results) state that hydrogen makes up roughly 74% of the universe's elemental (baryonic) mass, with helium about 24%, making hydrogen the most abundant element by mass., nasa/standard astrophysics references (e.g. nucleosynthesis abundance tables) consistently report hydrogen as ~74% of baryonic mass in the universe, with helium second (~24%); this is a well-established, time-invariant physical fact not derivable from blockchain data., ntrs.nasa.gov, pubchem, hydrogen (h): https://pubchem.ncbi.nlm.nih.gov/element/h; nasa imagine the universe, cosmology: https://imagine.gsfc.nasa.gov/ask_astro/cosmology.html, pubchem.ncbi.nlm.nih.gov, royal society of chemistry, hydrogen, natural abundance: https://periodic-table.rsc.org/element/1/ — identifies hydrogen as the most abundant element in the universe. springer encyclopedia of astrobiology, hydrogen: https://doi.org/10.1007/978-3-662-44185-5_750 — identifies hydrogen as the most abundant element, comprising approximately 75% of detectable mass., science.gsfc.nasa.gov, science.nasa.gov, standard astronomy reference statement that hydrogen is the most abundant element in the universe by mass (about 74% of baryonic mass, primordial nucleosynthesis); e.g. nasa and wikipedia 'hydrogen' article. read from memory, not fetched live in this run., standard astrophysical consensus (e.g. nasa/wikipedia 'abundance of the chemical elements'): hydrogen is the most abundant element in the universe by mass (~74%), followed by helium (~24%), standard astrophysical/cosmochemical consensus (e.g. nasa, iupac/codata cosmic abundance tables): hydrogen comprises roughly 74% of baryonic mass in the universe, far exceeding helium (~24%) and all heavier elements combined., standard astrophysics/cosmochemistry consensus (e.g. nasa/lawrence berkeley national laboratory nucleosynthesis summaries, and standard references such as encyclopaedia britannica's 'abundance of elements' entry) report hydrogen as roughly 74% of the universe's baryonic mass, with helium second at roughly 24-25%; all other elements together constitute only a few percent., standard astrophysics/cosmochemistry reference (e.g. nasa/iau elemental abundance tables): hydrogen comprises ~74% of the universe's baryonic mass, making it the most abundant element by mass, ahead of helium (~24%)., standard cosmic elemental abundance data (e.g. nasa/astrophysics references on big bang nucleosynthesis) consistently show hydrogen comprises roughly 74% of baryonic mass in the universe, far exceeding helium (~24%) and all heavier elements combined (~2%)., widely cited astrophysics consensus (e.g. nasa's cosmicopia / standard astronomy references on elemental composition of the universe): hydrogen comprises roughly 73-75% of baryonic mass in the universe, far more than helium (~24-25%) or any heavier element, making it the most abundant element by mass., wikipedia, 'abundance of the chemical elements' (cosmic abundance section; hydrogen is the most abundant element by mass, about 75% of baryonic mass, citing big bang nucleosynthesis and stellar composition data), wikipedia, 'chemical element': hydrogen and helium are the lightest elements, created by big bang nucleosynthesis in a ratio of about 3:1 by mass, so hydrogen is the most abundant element by mass, www.acs.org, www.energy.gov, www.nasa.gov, www1.grc.nasa.gov
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#1274hydrogenfrom imagine.gsfc.nasa.gov
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#1020hydrogenfrom cosmicopia.gsfc.nasa.gov
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#795hydrogenfrom coolcosmos.ipac.caltech.edu139 more
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