
Coloca-se, portanto, a seguinte questão: este artigo teria sido aprovado pelas revistas científicas "tradicionais"? Passaria a análise céptica e crítica (sim, com as suas falhas, é certo...) dos seus editores?
Reading the text, my impression is one of excessive padding. It's a dump of miscellaneous facts about carbonaceous chondrites, not well-honed arguments edited to promote concision or cogency. The figures are annoying; when you skim through them, several will jump out at you as very provocative and looking an awful lot like real bacteria, but then without exception they all turn out to be photos of terrestrial organisms thrown in for reference. The extraterrestrial 'bacteria' all look like random mineral squiggles and bumps on a field full of random squiggles and bumps, and apparently, the authors thought some particular squiggle looked sort of like some photo of a bug. This isn't science, it's pareidolia. They might as well be analyzing Martian satellite photos for pictures that sorta kinda look like artifacts.
I'm looking forward to the publication next year of the discovery of an extraterrestrial rabbit in a meteor. While they're at it, they might as well throw in a bigfoot print on the surface and chupacabra coprolite from space. All will be about as convincing as this story.
While they're at it, maybe they should try publishing it in a journal with some reputation for rigorous peer review and expectation that the data will meet certain minimal standards of evidence and professionalism.
Otherwise, this work is garbage. I'm surprised anyone is granting it any credibility at all.
He spends a lot of text discussing the morpohlogical similarities of these filaments to cyanobacteria, but I don't regard these similarities as worth anything. Filamentous bacteria are very morphologically diverse, and additional variations in appearance are likely to result from inconsistent preparation for electron microscopy. It's probably pretty easy to find a bacterial image that resembles any fibrous structure. In the absence of any statistical evidence to the contrary, it's prudent to assume that such similarities are purely coincidental.
The author tacks on quite a bit of other less-than-compelling information intended to support his claim that life from space is plausible. For example, he shows photos of colonies of coloured microorganisms to support his argument that the colours seen on the surfaces of Europa and Enceladus are biological in origin.
Chandra Wickramasinghe is the journal's Executive Editor for Astrobiology, and presumably is the Editor responsible for this article. I heard him give a talk pushing panspermia about 10 years ago (the audience was an undergraduate science society at Oxford). The talk was very slick but dreadfully bad as science. The evidence he cited to support his arguments wasn't actually untrue, but he twisted everything to make his arguments seem stronger than they were. He argued like a lawyer - his only goal seemed to be convincing the audience that his conclusion was correct, regardless of the contrary evidence that an unbiased consideration of the evidence would provide. Thus I wouldn't trust his scientific judgment about anything concerning astrobiology.


















