July 6, 2015 : by Bill Smith – post graduate student of Chandra Wickramasinghe.
As NASA has now changed its overall mission tag from “Search for Water” to “Seeking the Signs of Life”; and as missions to Titan, Enceladus, Europa and Mars are planned to “seek for the signs of life”, the astrobiologists of this new generation are no longer constrained to seek life just on earth.
The spread of material from Mars to Earth and back, is proven and accepted; the associated spread of viruses and bacteria, live, dessicated or fossilized, is statistically likely and studied by astrobiologists in Universities around the world. It is now mainstream science, so get over it.
The Hoyle-Wickramasinghe Model of Panspermia has remained the most likely model for over 40 years and over the last 5 years discoveries in deep earth, deep rock and deep space have increased the likelihood that we will find our “little friends” on most solar system bodies – from Mars, Titan, Europa and Enceladus.
Comets with their short orbits contained within the inner solar system, (ie short period comets), have likely seen continuous transfer of microbes since “Day 1”. Rosetta’s Comet 67P is a 8 year orbit comet, so it falls into the category of very likely containing solar system microbes. Personally I am more excited about long period comets like ISON coming in from the Oort Cloud and likely even adjacent stars. There is every possibility they contain new strains of microbes.
But 67P is “one of ours”. So if Rosetta and Philae experiments find “NO” microbes, this will indeed be a major discovery and will be a start of a huge rethink. Even challenging the validity of Panspermia.
The probability is Sir Fred Hoyle and Chandra Wickramasinghe will be again proven right and their vision acknowledged. Surely, in this birth centenary year of Sir Fred, the champagne will flow at Churchill College, Cambridge University, UK.