March 07, 2011

Origin of Life from Outer Space ?


  2. Transport and survival through space of a replicator is improbable
If we think about it:




Official Statement from Dr. Rudy Schild,
Center for Astrophysics, Harvard-Smithsonian,
Editor-in-Chief, Journal of Cosmology.



ps3921126 said...

As far as I'm concerned, the Panspermia hypothesis has never been any more than an attempt to put off answering the really fundamental question, which is how did life first appear? That's the question that science has so far been unable to answer, so saying it came from somewhere else is just a way of avoiding the question.

Dienekes said...

You are right that science has been unable to answer the question of life's first appearance. The usual explanation is that it was a rare chemical event that created a replicator which subsequently evolved to the most recent common ancestor of all life. It would be nice if there was a plausible chemical probability calculation, say, how probable is the spontaneous formation of an evolvable replicator in so much volume of material X, Y, Z in so much time. That is obviously not an easy thing to do convincingly, because it is difficult to calculate probabilities for extreme events. Without such calculation, the question of life's origin here or elsewhere pretty much comes down to people's prior beliefs.

I personally see no reason to favor either hypothesis very strongly.

Leslie Schwartz said...

Life, the pre-cursors to life could have alternatively developed both on earth and extra-terrestrially.

There is evidence of pre-cursors, if not life itself in Mars rocks that made their way to earth, and in space, such as chlorophyll being found in "space" between the planets.

Given the vast range of environments life has been found in various forms on earth, I have concluded that life is likely much more prevalent than scientists, academics have presumed for past decades.

Leonid Chumachenko said...

To understanding origin of life need a workable universal model. It will be presented in 2013 Previously, with the idea and the concept can get acquainted on the blog will provide an answer to the key question - Why Nature chose nucleotide deoxyribose as the main and the only building material for DNA. And also the nature, mechanisms and principles of the assembly of individual nucleotides, and the polymer chains of DNA and RNA.