Search for Past Life on Mars: Possible Relic Biogenic Activity in Martian Meteorite ALH84001

S. McKay, David; K. Gibson, Everett; L. Thomas-Keprta, Kathie; Vali, Hojatollah; S. Romanek, Christopher; J. Clemett, Simon; D. F. Chillier, Xavier; R. Maechling, Claude; N. Zare, Richard

doi:10.1126/science.273.5277.924

Public

Search for Past Life on Mars: Possible Relic Biogenic Activity in Martian Meteorite ALH84001

Shared by NobleBlocks on Aug 16, 1996 • 12:00 AM UTC

Authors:

David S. McKay

Everett K. Gibson

Kathie L. Thomas-Keprta

Abstract

Fresh fracture surfaces of the martian meteorite ALH84001 contain abundant polycyclic aromatic hydrocarbons (PAHs). These fresh fracture surfaces also display carbonate globules. Contamination studies suggest that the PAHs are indigenous to the meteorite. High-resolution scanning and transmission el...

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