Posted on 12/29/2021 5:57:37 AM PST by Red Badger
A summary of decades of research on a rather 'out-there' idea involving viruses from space raises questions on just how scientific we can be when it comes to speculating on the history of life on Earth.
It's easy to throw around words like crackpot, rogue, and maverick in describing the scientific fringe, but then papers like this one, from 2018, come along and leave us blinking owlishly, unsure of where to even begin.
A total of 33 names were listed as authors on this review, which was published by Progress in Biophysics and Molecular Biology back in August 2018. The journal is peer reviewed and fairly well cited. So it's not exactly small, or a niche pay-for-publish source.
Science writer Stephen Fleischfresser goes into depth on the background of two of the better known scientists involved: Edward Steele and Chandra Wickramasinghe. It's well worth a read.
For a tl;dr version, Steele is an immunologist who has a fringe reputation for his views on evolution that relies on acquiring gene changes determined by the influence of the environment rather than random mutations, in what he calls meta-Lamarckism.
Wickramasinghe, on the other hand, has had a somewhat less controversial career, recognized for empirically confirming Sir Fred Hoyle's hypothesis describing the production of complex carbon molecules on interstellar dust.
Wickramasinghe and Hoyle also happened to be responsible for another space biology thesis. Only this one is based on more than just the origins of organic chemistry.
The Hoyle Wickramasinghe (H-W) thesis of Cometary (Cosmic) Biology makes the rather simple claim that the direction of evolution has been significantly affected by biochemistry that didn't start on our planet.
In Wickramasinghe's own words, "Comets are the carriers and distributors of life in the cosmos, and life on Earth arose and developed as a result of cometary inputs."
Those inputs, Wickramasinghe argued, aren't limited to a generous sprinkling of space-baked amino acids, either.
Rather, they include viruses that insert themselves into organisms, pushing their evolution into whole new directions.
The report, titled "Cause of Cambrian Explosion – Terrestrial or Cosmic?", pulls on existing research to conclude that a rain of extra-terrestrial retroviruses played a key role in the diversification of life in our oceans roughly half a billion years ago.
"Thus retroviruses and other viruses hypothesized to be liberated in cometary debris trails both can potentially add new DNA sequences to terrestrial genomes and drive further mutagenic change within somatic and germline genomes," the authors wrote.
Let that sink in for a moment. And take a deep breath before continuing, because that was the tame part.
It was during this period that a group of mollusks known as cephalopods first stretched out their tentacles from beneath their shells, branching into a stunning array of sizes and shapes in what seemed like a remarkably short time frame.
The genetics of these organisms, which today include octopuses, squid, and cuttlefish, are as weird as the animals themselves, due in part to their ability to edit their DNA on the fly.
The authors of the paper make the rather audacious claim that these genetic oddities might be a sign of life from space.
Not of space viruses this time, but the arrival of whole genomes frozen in stasis before thawing out in our tepid waters.
"Thus the possibility that cryopreserved squid and/or octopus eggs, arrived in icy bolides several hundred million years ago should not be discounted," they wrote.
In his review of the paper, medical researcher Keith Baverstock from the University of Eastern Finland conceded that there's a lot of evidence that plausibly aligns with the H-W thesis, such as the curious timeline of the appearance of viruses.
But that's just not how science advances.
"I believe this paper justifies skepticism of the scientific value of stand alone theories of the origin of life," Baverstock argued at the time.
"The weight of plausible, but non-definitive, evidence, great though that might be, is not the point."
While the idea is as novel and exciting as it is provocative, nothing in the summary helps us better understand the history of life on Earth any better than existing conjectures, adding little of value to our model of evolution.
Still, with solid caveats in place, maybe science can cope with a generous dose of crazy every now and then.
Journal editor Denis Noble concedes that 'further research is needed', which is a bit of an understatement.
But given the developments regarding space-based organic chemistry in recent years, there's room for discussion.
"As space chemistry and biology grows in importance it is appropriate for a journal devoted to the interface between physics and biology to encourage the debates," said Noble.
"In the future, the ideas will surely become testable."
Just in case those tests confirm speculations, we recommend being well prepared for the return of our cephalopod overlords. Who knows when they'll want those eggs back?
This research was published in Progress in Biophysics and Molecular Biology.
A version of this article was first published in August 2018.
A few years back, a local bar owner went fishing and caught an octopus. Instead of throwing it back, he took it to his bar and put it in his aquarium.
The Octopus would rearrange the contents of the aquarium, plants, objects, decorations, etc.
The man would put them back where they came from, but during the night the octopus would rearrange them back again!....................
With grammar issues.
I thought it wasn’t “Octopuses”
I thought it was “Octopi”
In my grandmother’s lifetime the notions of powered flight, space flight, and television were all considered ludicrous by ‘sensible’ people.
Hell, the notion of a Donald Trump presidency was mocked and ridiculed right here on FR as ridiculous, absurd, a clown show, and etc.
Octopus and their relatives were created by God. Another example of HIS wonderful works.
Rush used some of that junk science to hear.
What was the cause of the Cambrian explosion then? Lots of oxygen. Earth was once an ice-ball from pole to pole. Volcanoes eventually pumped out enough carbon dioxide to warm up the planet. That in turn made plant growth go wild. Plants make oxygen so they created it in vast amounts. Suddenly animals are given a boost of energy and that is why evolution happened so quickly after so many years under the ice.
They cheat at cards.
Well, yeah, they got 8 hands..................
I think it is not that far fetched and a more valid theory than complex life appearing from nothing.
We know some eggs, embryos and sperm/pollen can be frozen indefinitely.
It’s possible to have a planetary impact so massive that rocks with life deep in their crevices are ejected into orbit and flash frozen in space. These rocks can then travel for millions of years with the center in a cryogenic state and protected from radiation.
If the rock happens to fall on a suitable planet one day, life can thaw, exit the crevices and live on.
I think we are far from alone and the Universe is big game of cosmic billiards far beyond the scale of any human. In our very limited lifetime here, most of us don’t even get to see one “ball” so it seems far fetched. But over millions of years, there have been many rocks that arrived from very distant places.
...and I thought it was the dolphins.
2022. 20 + 22 = ?
I watch Ancient Aliens...the circumstantial(?) evidence is overwhelming.
Season 2 is coming soon.
I’ve never laughed like that in my life.
/ can’t wait
It would be interesting to see the pattern of the octopus’ arrangement.
Lol!
Alien cookbook: “To Serve Man.”
—Simpsons
I know that I have a hard time believing it, too, but the octo’s and squid’s etc unusual DNA are found nowhere else on Earth. Most unusual. Not sure I believe in AA’s “panspermia” premise, but it’s something to ponder.
Plot twist: Humans also came from space.
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