Low-energy ion bombardment of frozen bacterial spores and its relevance to interplanetary spaceM. Tuleta1, L. Gabla1 and A. Szkarlat2
1 Institute of Physics, Jagiellonian University - Reymonta 4, 30-059 Cracow, Poland
2 Laboratory of Microbiology, Clinical Children's Hospital of the Jagiellonian University Medical College - Wielicka 265, 30-663 Cracow, Poland
received 3 September 2004; accepted in final form 11 February 2005
published online 9 March 2005
The panspermia hypothesis is concerned with the dissemination of life in space in the form of simple micro-organisms. During an interplanetary journey the micro-organisms are subjected to the action of, among others, the solar wind. We have simulated experimentally such conditions bombarding frozen bacterial spores with low-energy hydrogen ions. On the basis of the results obtained and our earlier research, a new look at the panspermia hypothesis is discussed.
79.20.Rf - Atomic, molecular, and ion beam impact and interactions with surfaces.
87.50.-a - Effects of radiation and external fields on biomolecules, cells and higher organisms.
96.50.-e - Interplanetary space.
© EDP Sciences 2005