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Jonathan P, Huang Richard B, Hoover Ashit, Swain Chris, Murdock Dale Andersen Asim K, Bej
Extreme conditions such as low temperature, dryness, and constant UV-radiation in terrestrial Antarctica are limiting factors to the survival of microbial populations. The objective of this study was to investigate the microbial diversity and enumeration between the open water lakes of Schirmacher Oasis and the permanently ice-covered Lake Untersee...
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Nathalie Cabrol Dale Andersen C R, Stoker Pascal Lee C P, Mckay D S, Wettergreen
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Nazia, Mojib Jonathan, Huang Richard B, Hoover Elena V, Pikuta Michael, Storrie-Lombardi Birgit, Sattler Dale Andersen Asim K, Bej
Extreme conditions such as low temperature, aridness, low availability of organic matter, high salinity and UV-radiation in terrestrial Antarctica are key factors limiting the habitation of biotic communities and ecosystem dynamics. In recent studies, it has been discovered that the bacterial communities are highly diverse and distributed widely in...
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N, Mojib J, Huang R B, Hoover E V, Pikuta M, Storrie-Lombardi B, Sattler Dale Andersen A K, Bej
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Dirk, Schulze-Makuch Joop M, Houtkooper Michael, Knoblauch Roberto, Furfaro Wolfgang, Fink Alberto G, Fairén Hojatollah, Vali James N, Head Darlene S S, Lim James, Dohm
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The Viking mission was the only mission to date that conducted life detection experiments. It revealed ambiguous and still controversial results. New findings and hypotheses urge a re-evaluation of the Viking results and a re-evaluation of the evidence for the possible presence of life on Mars in general. Recent findings of abundant water ice on Ma...
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A, Forrest H, Bohm B, Laval D, Reid Dale Andersen E, Magnusson M, Doble
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Jennifer L, Heldmann Michael T, Mellon Owen B, Toon Wayne H, Pollard John, Pitlick Christopher P, Mckay Dale Andersen
Geomorphic evidence suggests that recent gullies on Mars were formed by fluvial activity. The Martian gully features are significant because their existence implies the presence of liquid water near the surface on Mars in geologically recent times. Irrespective of the ultimate source of the fluid carving the gullies, we seek to understand the behav...
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P T, Doran J C, Priscu W B, Lyons R D, Powell Dale Andersen R J, Poreda
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Dale Andersen Wayne H, Pollard Christopher P, Mckay Jennifer, Heldmann Dale Andersen W H, Pollard C P, Mckay J L, Heldmann O B, Toon B M, Jakosky
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Published in
Journal of Geophysical Research: Planets
Perennial springs located on west central Axel Heiberg Island in the Canadian High Arctic occur in a region with a mean annual air temperature of-17 degrees C and flow through continuous permafrost over 600 meters thick. The spring water is a low temperature (up to 6 degrees C) brine flow that maintains constant discharge temperatures and flow rate...
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J G, Cogley M A, Ecclestone Dale Andersen
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Carol, Stoker Butler P Iii, Hine Michael, Sims Daryl, Rasmussen Phil, Hontalas Terrence W, Fong Jay, Steele Don, Barch Dale Andersen Eric, Miles
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In the Fall of 1993, NASA Ames deployed a modified Phantom S2 Remotely- Operated underwater Vehicle (ROV) into an ice-covered sea environment near McMurdo Science Station, Antarctica. This deployment was part of the antarctic Space Analog Program, a joint program between NASA and the National Science Foundation to demonstrate technologies relevant ...
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John Rummel Lynn, Harper Dale Andersen
The goal of NASA s Exobiology Program is to understand the origin, evolution, and distribution of life in the universe. To do this, the Exobiology Program seeks to provide a critical framework and some key research to allow NASA to bear the combined talents and capabilities of the agency and the scientific community, and the unique opportunities af...
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Robert A Jr, Wharton Dale Andersen Sara E, Bzik John Rummel
This symposium was held at the NASA Ames Research Center, Moffett Field, California, July 24-27, 1990. The NASA exobiology investigators reported their recent research findings. Scientific papers were presented in the following areas: cosmic evolution of biogenic compounds, prebiotic evolution (planetary and molecular), early evolution of life (bio...
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D R, Roberts Dale Andersen C P, Mckay R A Jr, Wharton John Rummel
The feasibility of using Antarctica as a platform for creating earth-based simulations of regenerative life support systems (LSSs) for future space missions is discussed. The requirements for a bioregenerative LSS and the types of technologies that may be used in such a system are examined. Special attention is given to the objectives and the organ...
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Donald L, Devincenzi John Marshall Dale Andersen
Descriptions of several instrument concepts that were generated during a workshop entitled, Exobiology Instrument Concepts for a Soviet Mars 94/94 Mission, held at NASA Ames Research Center in 1989 are presented. The objective was to define and describe instrument concepts for exobiology and related science that would be compatible with the mission...
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Robert, Wharton Barney, Roberts Erick, Chiang John, Lynch Carol, Roberts Corinne, Buoni Dale Andersen
This report has discussed the Space Exploration Initiative (SEI) and the US Antarctic Program (USAP) in the context of assessing the potential rationale and strategy for conducting a cooperative NASA/NSF (National Science Foundation) effort. Specifically, such an effort would address shared research and data on living and conducting scientific rese...
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Janice Bishop Paj, Englert Dale Andersen C, Kralik C, Koeberl C M, Pieters H, Froeschl R A Jr, Wharton
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D, Schumann Dale Andersen M, Kunzmann S K, Sears H, Vali
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Bernard, Laval John S, Bird Gregory F, Slater Marianne, Douglas Darlene S S, Lim Christopher P, Mckay Sherry L, Cady Dale Andersen Janice Bishop
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Paul, Budkewitsch A D, Marc Paris W, Vachon Wayne H, Pollard Dale Andersen