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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1987 1
1990 1
1996 1
1997 1
1998 1
2000 2
2001 1
2002 3
2006 1
2009 1
2010 2
2011 1
2014 1
2016 1
2017 3
2018 1
2020 1
2021 0
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23 results
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Page 1
Alkali magmatism on a carbonaceous chondrite planetesimal.
Aléon J, Aléon-Toppani A, Platevoet B, Bardintzeff JM, McKeegan KD, Brisset F. Aléon J, et al. Among authors: mckeegan kd. Proc Natl Acad Sci U S A. 2020 Apr 14;117(15):8353-8359. doi: 10.1073/pnas.1919550117. Epub 2020 Mar 30. Proc Natl Acad Sci U S A. 2020. PMID: 32229558 Free PMC article.
Early formation of the Moon 4.51 billion years ago.
Barboni M, Boehnke P, Keller B, Kohl IE, Schoene B, Young ED, McKeegan KD. Barboni M, et al. Among authors: mckeegan kd. Sci Adv. 2017 Jan 11;3(1):e1602365. doi: 10.1126/sciadv.1602365. eCollection 2017 Jan. Sci Adv. 2017. PMID: 28097222 Free PMC article.
Isotopic compositions of cometary matter returned by Stardust.
McKeegan KD, Aléon J, Bradley J, Brownlee D, Busemann H, Butterworth A, Chaussidon M, Fallon S, Floss C, Gilmour J, Gounelle M, Graham G, Guan Y, Heck PR, Hoppe P, Hutcheon ID, Huth J, Ishii H, Ito M, Jacobsen SB, Kearsley A, Leshin LA, Liu MC, Lyon I, Marhas K, Marty B, Matrajt G, Meibom A, Messenger S, Mostefaoui S, Mukhopadhyay S, Nakamura-Messenger K, Nittler L, Palma R, Pepin RO, Papanastassiou DA, Robert F, Schlutter D, Snead CJ, Stadermann FJ, Stroud R, Tsou P, Westphal A, Young ED, Ziegler K, Zimmermann L, Zinner E. McKeegan KD, et al. Science. 2006 Dec 15;314(5806):1724-8. doi: 10.1126/science.1135992. Science. 2006. PMID: 17170292 Free article.
DETERMINING THE ELEMENTAL AND ISOTOPIC COMPOSITION OF THE PRESOLAR NEBULA FROM GENESIS DATA ANALYSIS: THE CASE OF OXYGEN.
Laming JM, Heber VS, Burnett DS, Guan Y, Hervig R, Huss GR, Jurewicz AJG, Koeman-Shields EC, McKeegan KD, Nittler L, Reisenfeld DB, Rieck KD, Wang J, Wiens RC, Woolum DS. Laming JM, et al. Among authors: mckeegan kd. Astrophys J Lett. 2017 Dec 10;851(No 1):L12. doi: 10.3847/2041-8213/aa9bf0. Epub 2017 Dec 6. Astrophys J Lett. 2017. PMID: 29657703 Free PMC article.
Evidence for life on Earth before 3,800 million years ago.
Mojzsis SJ, Arrhenius G, McKeegan KD, Harrison TM, Nutman AP, Friend CR. Mojzsis SJ, et al. Among authors: mckeegan kd. Nature. 1996 Nov 7;384(6604):55-9. doi: 10.1038/384055a0. Nature. 1996. PMID: 8900275
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