alexa Evidence to Clinch The Theory of Extraterrestrial Life | OMICS International
ISSN: 2332-2519
Journal of Astrobiology & Outreach
Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on
Medical, Pharma, Engineering, Science, Technology and Business

Evidence to Clinch The Theory of Extraterrestrial Life

Chandra Wickramasinghe1,2,3*
1Buckingham Centre for Astrobiology (BCAB), Buckingham University, UK
2Institute for the Study of Panspermia and Astroeconomics, Gifu, Japan
3University of Peradeniya, Peradeniya, Sri Lanka
Corresponding Author : Wickramasinghe NC
Buckingham Centre for Astrobiology (BCAB)
Buckingham University, UK
Tel: +44-777-838-9243
E-mail: [email protected]
Received February 11, 2015; Accepted February 16, 2015; Published February 20, 2015
Citation: Chandra Wickramasinghe (2015) Evidence to Clinch the Theory of Extraterrestrial Life. Astrobiol Outreach 3:e107. doi: 10.4172/2332-2519.1000e107
Copyright: © 2015 Chandra Wickramasinghe. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Related article at
DownloadPubmed DownloadScholar Google

Visit for more related articles at Journal of Astrobiology & Outreach

New data may serve to bring about the long overdue paradigm shift from theories of Earth-centred life to life being a truly cosmic phenomenon. The theory that bacteria and viruses similar to those on Earth exist in comets, other planets and generally throughout the galaxy was developed as a serious scientific discipline from the early 1980’s [1-4]. Throughout the past three decades this idea has often been the subject of criticism, denial or even ridicule. Even though many discoveries in astronomy, geology and biology continued to provide supportive evidence for the theory of cosmic life, the rival theory of Earth-centered biology has remained deeply rooted in scientific culture. However, several recent developments are beginning to strain the credibility of the standard point of view.
The great abundance of highly complex organic molecules in interstellar clouds [5], the plentiful existence of habitable planets in the galaxy numbering over 100 billion and separated one from another just by a few light years [6], the extreme space-survival properties of bacteria and viruses -make it exceedingly difficult to avoid the conclusion that the entire galaxy is a single connected biosphere. The patterns of evolution of life found on the Earth are therefore likely to be repeated on countless planets, with each individual planetary environment selecting its genetic inheritance from a vast cosmic reservoir of genes. These ideas have been elaborated upon in several papers [7,8].
In this brief commentary I wish to draw attention to three new developments that make the switch from Earth-centred to cosmiccentred life imperative. Firstly, discoveries of living bacteria and biomorphs in the stratosphere which could not have been plausibly lofted from the Earth’s surface continue to point to their origin from cometary sources [9,10]. More work is needed of course to decisively clinch this matter, but the signs are already clear that our planet is by no means sealed from external biological contaminants. Secondly, new Rosetta data for Comet 67P/CG makes it increasingly difficult to avoid the conclusion that microbial life in the comet is indeed plentiful and could account for several of its salient features [11,12].
As far back as 1986 Hoyle and the present writer predicted a low albedo of comets based on the hypothesis of a biological comet [13]. When aqueous regions near the comet’s surface containing a suspension of microbial particles and sub-micron mineral dust evaporate in a low density cometary environment, loosely compacted factal structures are likely to build up into a surface layer. It is such a layer that can elegantly explain the low optical albedo < 0.06 found for comet Halley as well as comet 67P/C-G.
Observations of comet 67P/C-G have also borne out the prediction of a surface laden with complex organics in the form of a broad 3.3 micrometer absorption feature [13] in the spectrum of reflected light (Figure 1). The existence of organic/mineral dust complexes in particle collections that are fractal on scales of 10 micrometres to tens of nanometers is also indicated Rosetta’s COSIMA and MIDAS measurements [14,15] (Figure 2).
In conclusion it is worth noting here that the long-disputed discovery by Levin and Straat [16] of evidence of extant microbial life on Mars (in the Labelled Release experiment on the 1976 Viking probe) appears to have been finally vindicated, both by the discovery of organic molecules on the surface, and more dramatically by the recent discovery of time-variable spikes in methane observed by the Curiosity Rover [17] as displayed in Figure 3. Ongoing subsurface microbiology yielding methane as a metabolite is the simplest explanation of this data.
At long last the tide appears to have turned in favour of the idea if extraterrestial biology. However, if one still insists that life started in situ on the Earth and that comets could at best serve as deliverers of necessary organics and water, it may still be possible to accommodate the new facts provided ad hoc assumptions are made. The situation would be similar to the introduction of epicycles in the Ptolemaic theory that delayed the acceptance of a heliocentric planetary system. How many such epicycles would be needed for the second Copernican Revolution remains to be seen.

Figures at a glance

image   image   image
Figure 1   Figure 2   Figure 3
Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Relevant Topics

Article Usage

  • Total views: 12910
  • [From(publication date):
    May-2015 - Aug 15, 2018]
  • Breakdown by view type
  • HTML page views : 9030
  • PDF downloads : 3880

Post your comment

captcha   Reload  Can't read the image? click here to refresh

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2018-19
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

[email protected]

+1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals


porn sex

[email protected]

1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

Gaziantep Escort

[email protected]

1-702-714-7001Extn: 9040

Clinical Journals

Datta A


[email protected]

1-702-714-7001Extn: 9037

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

General Science

Andrea Jason

mp3 indir

[email protected]

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Medical Journals


Nimmi Anna

[email protected]

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T


ne[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001Extn: 9042

© 2008- 2018 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
Leave Your Message 24x7