Results 111 to 120 of about 441 (171)

Prebiotic organic compounds in samples of asteroid Bennu indicate heterogeneous aqueous alteration. [PDF]

Proc Natl Acad Sci U S A
Mojarro A, Aponte JC, Dworkin JP, Elsila JE, Glavin DP, Connolly HC, Lauretta DS.   +6 more
europepmc   +1 more source

Gamma activity concentrations of ²²⁶Ra, ²³²Th, ⁴⁰K, and health hazard assessments of granites from Wadi El-Nabi' mining area, Egyptian Nubian Shield. [PDF]

Sci Rep
Shereif AS, Heikal MTS, El Ela ASA, El Shabasy A, Masoud AE, Csámer Á.   +5 more
europepmc   +1 more source

Actinide Elemental Ratios of Spent Nuclear Fuel Samples by Resonance Ionization Mass Spectrometry. [PDF]

J Am Soc Mass Spectrom
Raiwa M, Savina MR, Roberts AG, Shulaker DZ, Isselhardt BH.   +4 more
europepmc   +1 more source

Distribution of extraterrestrial nucleobases, other N-heterocycles, and their precursors in a sample from asteroid Bennu. [PDF]

Commun Chem
Oba Y, Koga T, Takano Y, Naraoka H, Hirakawa Y, Sunami S, Furukawa Y, Yamazaki T, Tomaru T, Dworkin JP, Glavin DP, Connolly HC, Lauretta DS.   +12 more
europepmc   +1 more source

Stability of the fcc phase in shocked nickel up to 332 GPa. [PDF]

Nat Commun
Pereira KA, Clarke SM, Singh S, Briggs R, McGuire CP, Lee HJ, Khaghani D, Nagler B, Galtier E, Cunningham E, McGonegle D, Tracy SJ, Vennari C, Gorman MG, Coleman AL, Davis C, Hutchinson T, Eggert JH, Smith RF, Walsh JPS.   +19 more
europepmc   +1 more source

Present-day thermal and water activity environment of the Mars Sample Return collection. [PDF]

Sci Rep
Zorzano MP, Martínez G, Polkko J, Tamppari LK, Newman C, Savijärvi H, Goreva Y, Viúdez-Moreiras D, Bertrand T, Smith M, Hausrath EM, Siljeström S, Benison K, Bosak T, Czaja AD, Debaille V, Herd CDK, Mayhew L, Sephton MA, Shuster D, Simon JI, Weiss B, Randazzo N, Mandon L, Brown A, Hecht MH, Martínez-Frías J.   +26 more
europepmc   +1 more source

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Cosmochemistry

Thirty Years of Astronomical Discovery With UKIRT, 2010
Cosmochemistry is a rapidly evolving field of planetary science and the second edition of this classic text reflects the exciting discoveries made over the past decade from new spacecraft missions. Topics covered include the synthesis of elements in stars, behaviour of elements and isotopes in the early solar nebula and planetary bodies, and ...
Bruce Fegley, Laura Schaefer, Fegley Bruce   +2 more
exaly   +3 more sources

An introduction to cosmochemistry

Geochimica et Cosmochimica Acta, 1995
This textbook describes the composition and evolution of material objects in the universe. The survey begins with a discussion of terrestrial materials and ends with the composition of quasars and distant galaxies. There are two main themes: chemical processes responsible for the abundances we observe, and nuclear processes in which the chemical ...
  +6 more sources

Extrasolar Cosmochemistry

Annual Review of Earth and Planetary Sciences, 2014
Evidence is now compelling that elements heavier than helium in many white dwarf atmospheres have accumulated by accretion from orbiting rocky bodies, often larger than 100 km in diameter, such as asteroids. Consequently, we now possess a powerful tool to measure the elemental constituents of extrasolar minor planets.
M. Jura, E.D. Young
openaire   +1 more source