Out of this World!
Abstract If you have been hibernating for several weeks you may have missed the headlines and magazine covers exclaiming about “Life on Mars!” The basis for all of this excitement is an article in Science by Dr. David S. McKay of the Lyndon B. Johnson Space Center in Houston and eight of his colleag...
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1996
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croxfordunivpr:10.1017/s1551929500063616 2023-05-15T14:07:33+02:00 Out of this World! Carmichael, Stephen W 1996 http://dx.doi.org/10.1017/s1551929500063616 https://academic.oup.com/mt/article-pdf/4/8/3/48502581/mt0003.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Microscopy Today volume 4, issue 8, page 3-5 ISSN 2150-3583 1551-9295 General Medicine journal-article 1996 croxfordunivpr https://doi.org/10.1017/s1551929500063616 2023-02-17T11:28:27Z Abstract If you have been hibernating for several weeks you may have missed the headlines and magazine covers exclaiming about “Life on Mars!” The basis for all of this excitement is an article in Science by Dr. David S. McKay of the Lyndon B. Johnson Space Center in Houston and eight of his colleagues from several academic institutions. The reader of this column will not be surprised by the fact that microscopes were used to detect evidence of life on a meteorite from Mars. The first consideration was whether or not the meteorite was in fact a fragment of the martian surface. The specimen, known as ALH84001, is from a class of meteorites that appear to have resulted from impacts on Mars, some of the specimens landing in Antarctica where this one was recovered. Trapped gases (in glass droplets and stringers) in several of the family of meteorites closely match the martian atmosphere for several gases over 8 orders of magnitude range in abundance. Whereas ALHB4001 did not contain such trapped atmospheric gases, its elemental and isotopic composition closely resemble the meteorites that do. Article in Journal/Newspaper Antarc* Antarctica Oxford University Press (via Crossref) Microscopy Today 4 8 3 5 |
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Oxford University Press (via Crossref) |
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General Medicine |
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General Medicine Carmichael, Stephen W Out of this World! |
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General Medicine |
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Abstract If you have been hibernating for several weeks you may have missed the headlines and magazine covers exclaiming about “Life on Mars!” The basis for all of this excitement is an article in Science by Dr. David S. McKay of the Lyndon B. Johnson Space Center in Houston and eight of his colleagues from several academic institutions. The reader of this column will not be surprised by the fact that microscopes were used to detect evidence of life on a meteorite from Mars. The first consideration was whether or not the meteorite was in fact a fragment of the martian surface. The specimen, known as ALH84001, is from a class of meteorites that appear to have resulted from impacts on Mars, some of the specimens landing in Antarctica where this one was recovered. Trapped gases (in glass droplets and stringers) in several of the family of meteorites closely match the martian atmosphere for several gases over 8 orders of magnitude range in abundance. Whereas ALHB4001 did not contain such trapped atmospheric gases, its elemental and isotopic composition closely resemble the meteorites that do. |
format |
Article in Journal/Newspaper |
author |
Carmichael, Stephen W |
author_facet |
Carmichael, Stephen W |
author_sort |
Carmichael, Stephen W |
title |
Out of this World! |
title_short |
Out of this World! |
title_full |
Out of this World! |
title_fullStr |
Out of this World! |
title_full_unstemmed |
Out of this World! |
title_sort |
out of this world! |
publisher |
Oxford University Press (OUP) |
publishDate |
1996 |
url |
http://dx.doi.org/10.1017/s1551929500063616 https://academic.oup.com/mt/article-pdf/4/8/3/48502581/mt0003.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Microscopy Today volume 4, issue 8, page 3-5 ISSN 2150-3583 1551-9295 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1017/s1551929500063616 |
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Microscopy Today |
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