NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The solar UV environment and bacterial spore UV resistance: considerations for Earth-to-Mars transport by natural processes and human spaceflightThe environment in space and on planets such as Mars can be lethal to microorganisms because of the high vacuum and high solar radiation flux, in particular UV radiation, in such environments. Spores of various Bacillus species are among the organisms most resistant to the lethal effects of high vacuum and UV radiation, and as a consequence are of major concern for planetary contamination via unmanned spacecraft or even natural processes. This review focuses on the spores of various Bacillus species: (i) their mechanisms of UV resistance; (ii) their survival in unmanned spacecraft, space flight and simulated space flight and Martian conditions; (iii) the UV flux in space and on Mars; (iv) factors affecting spore survival in such high UV flux environments.
Document ID
20050172486
Document Type
Reprint (Version printed in journal)
Authors
Nicholson, Wayne L. (NASA Kennedy Space Center Cocoa Beach, FL United States)
Schuerger, Andrew C.
Setlow, Peter
Date Acquired
August 23, 2013
Publication Date
April 1, 2005
Publication Information
Publication: Mutation research
Volume: 571
Issue: 2-Jan
ISSN: 0027-5107
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: GM47461
CONTRACT_GRANT: GM19698
Distribution Limits
Public
Copyright
Other
Keywords
Review