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Microorganism Isolated In Space

Date:
December 18, 2002
Source:
Cardiff University
Summary:
How far up into the sky does the biosphere extend? Do microorganisms exist at heights of 40 km and in what quantity? To answer these questions several research institutes in India collaborated on a path-breaking project to send balloon-borne sterile "cryosamplers" into the stratosphere.

How far up into the sky does the biosphere extend? Do microorganisms exist at heights of 40 km and in what quantity? To answer these questions several research institutes in India collaborated on a path-breaking project to send balloon-borne sterile "cryosamplers" into the stratosphere. The programme was led by cosmologist Professor Jayant Narlikar, Director of the Inter University Centre for Astronomy and Astrophysics in Pune, with scientists at the Indian Space Research Organisation and the Tata Institute of Fundamental Studies contributing their various expertise.

Large volumes of air from the stratosphere at heights ranging from 20 to 41km were collected on 21 January 2001. The programme of analysis of samples in the UK was organised by Professor Chandra Wickramasinghe of Cardiff University, co-proponent with the late Sir Fred Hoyle of the modern theory of panspermia. This theory states that the Earth was seeded in the past, and is still being seeded, with microorganisms from comets.

Last year a team of biologists at Cardiff University's School of Biosciences reported evidence of viable bacteria in air samples at 41km in such quantity that implied a world-wide settling rate of one tonne of bacterial material per day. Although living bacteria were seen they could not be grown in the laboratory. Dr Milton Wainwright of Sheffield University's Department of Molecular Biology and Biotechnology, was asked to apply his skills to growing the organisms. Dr Wainwright isolated a fungus and two bacteria from one of the space derived samples collected at 41km. The presence of bacteria in these samples was then independently confirmed. These results are published in this month's issue of a prestigious microbiology journal FEMS Letters (Wainwright et al, 2002), published by Elsevier. The isolated organisms are very similar to known terrestrial varieties. There are however notable differences in their detailed properties, possibly pointing to a different origin. Furthermore, it should be stressed that these microorganisms are not common laboratory contaminants.

Dr Wainwright says, however, "Contamination is always a possibility in such studies but the "internal logic" of the findings points strongly to the organisms being isolated in space, at a height of 41km. Of course the results would have been more readily accepted and lauded by critics had we isolated novel organisms, or ones with NASA written on them! However, we can only report what we have found in good faith".

The new work of Wainwright et al is consistent with the ideas of Hoyle and Wickramasinghe that in fact predict the continuing input onto the Earth of "modern" organisms. In recent years and months there has been a growing body of evidence that can be interpreted as support for the theory of panspermia - e.g. the space survival attributes and general space hardiness of bacteria.


Story Source:

The above story is based on materials provided by Cardiff University. Note: Materials may be edited for content and length.


Cite This Page:

Cardiff University. "Microorganism Isolated In Space." ScienceDaily. ScienceDaily, 18 December 2002. <www.sciencedaily.com/releases/2002/12/021217072401.htm>.
Cardiff University. (2002, December 18). Microorganism Isolated In Space. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2002/12/021217072401.htm
Cardiff University. "Microorganism Isolated In Space." ScienceDaily. www.sciencedaily.com/releases/2002/12/021217072401.htm (accessed July 31, 2014).

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