Month: August 2014

Spurting into the Undiscovered Country

Mark DavisLeave a comment

voyager_plaqueThere was glop on the windows of the International Space Station. Outside. It was algae. How? Now that is unclear, but there is a recent tradition of arguing against abiogenesis here on Earth and arguing for ideas like panspermia where biological material keeps raining down on the planet, carried by comets and meteorites, trapped in crystal matrices. And there may be evidence that some of that may have happened, if only in the local system, between Mars and Earth.

Panspermia includes as a subset the idea of Directed Panspermia whereby some alien intelligence for some reason sends biological material out to deliberately seed worlds with living things. Why? Well, maybe it is a biological prerogative or an ethical stance. Maybe they feel compelled to do so because they are in some dystopian sci-fi narrative where their star is dying. One last gasping hope for alien kind!

Directed Panspermia as an explanation for life on Earth only sets back the problem of abiogenesis to other ancient suns and other times, and implicitly posits that some of the great known achievements of life on Earth like multicellular forms are less spectacularly improbable than the initial events of proto-life as we hypothesize it might have been. Still, great minds have spent great mental energy on the topic to the point that elaborate schemes involving solar sails have been proposed so that we may someday engage in Directed Panspermia as needed. I give you:

Mautner, M; Matloff, G. (1979). “Directed panspermia: A technical evaluation of seeding nearby solar systems”. J. British Interplanetary Soc. 32: 419.

So we take solar sails and bioengineered lifeforms in tiny capsules. The solar sails are large and thin. They carry the tiny capsules into stellar formations and slow down due to friction.… Read the rest

Marshlands

Mark DavisLeave a comment

MarshlandsIt is purely by chance that I discovered a remarkable note, penciled in a deliberate cursive, on page one hundred something of a secondhand copy of Borges’ Labyrinths. The Huns were clashing about and trampling books, but one survived—that sort of chance or magical thing—and an arrow crawled up from the text and declared “all great civilizations are built on marshes,” seemingly in praise for the despoiled monastery and its now collapsed civilization, or perhaps referring to the banks of the Danube or the arc of historiography that passed from Athens to Rome later in the page.

Regardless of the minutiae of the referents, the statement remained in my head for days as I shuffled about through my ordinary occupation and preoccupations with information theory, intelligent machines, and some spectral analysis of the statistical distribution of gut bacteria/eukaryotes. Google was fragmentary in its responses to the phrase as a query and I quit before the end of the first page, anyway, distracted by other thoughts about why marshes would be so attractive for building a civilization. The fishing should be good, admittedly, as well as the availability of reeds for various structures, but the shifting nature of land and the threat of mosquito infestation struck me as negatives. And wouldn’t clean, fresh water be better served by a mountain stream? All great cultures should be at the base of a non-volcanic snowpacked mountain.

I returned to Borges later in the week and found myself fanning through the pages like a schoolboy watching a stickfigure animation until, seventy-five pages further, below the tail of an essay on Cervantes and the inversion of authors and characters and readers, there was another brief flash off a curlicue of lead embedded in the page.… Read the rest