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The Cosmic Codex

The Cosmic Codex

Von: Brian Scott Pauls
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Living in a science fiction universe...

www.thecosmiccodex.comBrian Scott Pauls Kunst Science Fiction
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  • What in the universe is dark energy?

    What in the universe is dark energy?
    Oct 10 2026
    Banned Books Week Day of Action Suggestions:https://bannedbooksweek.org/wp-content/uploads/2023/10/ALA_DayofAction_OneSheet_Final.pdfDo you or someone you know need professional tech guidance for your author, coaching, or independent publishing business? If so, check out our sponsor Cloudessy, providing fractional Chief Technology Officer services. Simplify your tech stack, prevent launch failures, and build systems that actually support growth.https://marketing.cloudessy.com/30-minute-tech-stack-update/The expansion of the universe isn’t slowing down, but it should be.Every galaxy pulls on every other galaxy, so the expansion that began with the Big Bang ought to have been decelerating for thirteen billion years. In 1998, two rival teams of astronomers measured the deceleration using distant supernovae as standard candles1—and found the opposite. The supernovae were fainter than they should have been, which meant they were farther away than expected—so the expansion of the universe had been speeding up for the past five billion years or so.2 The discovery resulted in a Nobel Prize. It also introduced a name for the phenomenon: “dark energy.”3Regrettably, “dark energy” is a label rather than an explanation. Some form of energy with negative pressure, spread uniformly throughout space, is pushing everything apart. Taken together, the supernova data, cosmic microwave background, and clustering of galaxies put dark energy at roughly 68 percent of all mass-energy in the universe. Dark matter accounts for 27 percent. Ordinary matter—the stuff of stars, planets, nebulae, etc.—is about 5 percent.4 Of these, we understand dark energy, the most abundant component, the least. It’s one of the greatest unsolved mysteries of science.A Cosmological Constant?The oldest consideration of what we now call dark energy preceded its discovery by eighty years. In 1917, Einstein added a term to the equations of general relativity—the cosmological constant, Λ—to hold the universe static against its own gravity.5 He dropped the term in 1931, after Georges Lemaître (in 1927) and Edwin Hubble (in 1929) demonstrated that the universe is expanding.6 But it turns out an accelerating universe requires something like a cosmological constant—a fixed energy density built into space itself, which doesn’t attenuate as space expands.Quantum field theory tells us what Λ could be. Empty space isn’t empty. It seethes with virtual particles winking in and out of existence. Such activity carries energy, and vacuum energy behaves exactly like a cosmological constant.7 The trouble is how little we observe. The simplest estimates from particle physics predict a vacuum energy density 120 orders of magnitude greater than what astronomers measure.8 Either some unknown cancellation wipes out almost all of it, leaving the small amount we find, or vacuum energy is not the answer.So what could dark energy be? Physicists suggest some answers, each implying a different fate for the universe. It shouldn’t be surprising that science fiction writers have published stories addressing at least two of them.The Big FreezeIf Λ is the answer, the future is bleak. The universe never stops accelerating. Galaxies beyond our local group recede faster and faster until their light can no longer reach us, and the rest of the observable universe disappears into darkness. As Lawrence Krauss and Robert Scherrer have pointed out, astronomers a hundred billion years from now, living in the merged remnant of the Milky Way and Andromeda, will see a single island of stars in a void and no evidence the universe is expanding at all.9 Cosmology will vanish along with the distant galaxies.Eventually, life, too, must vanish. Freeman Dyson once argued that an intelligence could persist forever in an ever-expanding universe by thinking ever more slowly.10 Each thought costs energy, but the cost falls as the universe cools, and Dyson showed that a mind which cools along with it could stretch a finite reserve across infinite time—an endless series of ever-cheaper thoughts. Lawrence Krauss and Glenn Starkman showed in 2000 that an accelerating universe closes this loophole. It has a minimum temperature of its own, absurdly low but never zero, so the cooling stops and every thought has a minimum cost. In an accelerating universe, finite energy means a finite number of thoughts.11Gregory Benford’s “The Final Now,” published on Tor.com in 2010, is Krauss and Starkman’s paper rewritten as a creation myth.12 Two beings, He and She, have made a universe and now sit at its end conversing with the One—the merged remnants of all mortal minds that ever lived. Benford’s He explains: “The accelerating expansion of space-time, which was essential in the planning of all this, none the less yielded a more constricted long-term future.” Life has tried Dyson’s remedy—it has kept “ever-cooler,” thought slowly, and hibernated “for ever-longer ...
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    21 Min.
  • INTERVIEW: Phil Drake, Director of the Gunn Center for the Study of Science Fiction

    INTERVIEW: Phil Drake, Director of the Gunn Center for the Study of Science Fiction
    Oct 3 2026
    Register for the 2026 Sturgeon Symposium:https://sfcenter.ku.edu/2026-sturgeon-symposiumDo you or someone you know need professional tech guidance for your author, coaching, or independent publishing business? If so, check out our sponsor Cloudessy, providing fractional Chief Technology Officer services. Simplify your tech stack, prevent launch failures, and build systems that actually support growth.https://marketing.cloudessy.com/30-minute-tech-stack-update/Children of Ruin is the strongest book in Adrian Tchaikovsky’s original Children of Time trilogy. Last month, I critiqued the first novel, in which he explores the development of jumping spiders into an intelligent species across thousands of years—and what happens when they encounter humanity. Children of Ruin keeps to the eight-appendage theme by tackling octopuses.Tchaikovsky published Children of Ruin in May 2019, four years after Children of Time.1 It won the British Science Fiction Association Award for Best Novel of 2019.2 I’ll review the third volume, Children of Memory, next month.Cloudessy, my consulting business providing fractional Chief Technology Officer services, is a sponsor of this newsletter. If you or someone you know needs professional tech guidance for their author, coaching, or independent publishing business, check out the ad at the end of this post. Thank you!Emulating its predecessor, Children of Ruin jumps (like a spider!) between two time frames.3 In the “past,” an Old Empire terraforming crew arrives at a distant system, finding a life-bearing world they name Nod. It possesses a biochemistry built on elements hazardous to humans and organic molecules evolution never produced on Earth.4 Mission commander Yusuf Baltiel stays to study Nod, but his eccentric colleague Disra Senkovi takes the terraforming equipment to the system’s ocean world, Damascus, along with a tank of octopuses and a supply of the same nanovirus that, light-years away, is busy uplifting the Portiids from Children of Time.5Thousands of years later, in the “present,” we encounter an expedition of the spider-like Portiids, accompanied by “Humans” (as Tchaikxovsky styles the humans modified to co-exist with them6). Aboard the Voyager—with the uploaded, much-altered Avrana Kern along as ship’s mind—the crew follows fragmentary radio signals to the same system, hoping to find lost cousins.7 What they find instead is a spacefaring octopus civilization in the middle of a catastrophe above a quarantined planet.Like the spiders in Children of Time, Tchaikovsky’s portrayal of the octopuses benefits from his strong grasp of evolutionary biology.8 For insight into cephalopods, he credits Peter Godfrey-Smith’s 2016 book, Other Minds, in the acknowledgements as “an invaluable research aid.”9 Cephalopods are a good choice for this second book. Our last common ancestor with the octopus lived some 600 million years ago, and was probably a flattened worm a few millimeters long. From that point, cephalopods followed a completely separate evolutionary track to a surprising intelligence.10 Dispersed nervous systems, with more than half of their roughly 500 million neurons in their arms rather than their heads, provide octopuses with something closer to mental committees than our compact, unified brains.11Tchaikovsky’s octopus characters exhibit a vocabulary describing this very different neurology. “The Crown sets strategy, but battlefield tactics are the province of the Reach, those sub-nodes that run the arms.”12 An octopus fights with its whole body, even aboard a spaceship: “her skin sings a furious hymn of battle and her arms calculate vectors and suggest firing solutions.”13Tchaikovsky derives a psychology from these creatures’ physiology, and a society from that psychology. Octopuses communicate in color with their skin, and in posture with their arms and the rest of their body.14 Their discourse carries far more mood and subtext than hard information.15 And a creature with no fixed body plan has no fixed convictions: the octopuses “hold no certainties” and don’t “let themselves be ruled by tradition or history or even how they themselves felt yesterday.”16The octopuses reflect real-life biology, but the life on Nod is brilliant speculation.At first, Baltiel’s scientists don’t recognize what they’ve found. When a crew member falls ill, a colleague insists nothing native could be responsible; Earth life is too different from Nodan life, and “[p]arasites are the most specialized of specialists!”17 They evolve to thrive within very specific environments, which could in no way resemble the human body. She is right about Earth and catastrophically wrong about Nod. The terraformers have disturbed a colonial organism whose cells encode and share memory, “microscopic cells trading encoded understandings like Earth bacteria exchange immunity genes.”18 It learns whatever it absorbs, and it is very, very ...
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    39 Min.
  • A critique of Adrian Tchaikovsky's "Children of Ruin"

    A critique of Adrian Tchaikovsky's "Children of Ruin"
    Sep 28 2026
    Register for the 2026 Sturgeon Symposium:https://sfcenter.ku.edu/2026-sturgeon-symposiumDo you or someone you know need professional tech guidance for your author, coaching, or independent publishing business? If so, check out our sponsor Cloudessy, providing fractional Chief Technology Officer services. Simplify your tech stack, prevent launch failures, and build systems that actually support growth.https://marketing.cloudessy.com/30-minute-tech-stack-update/Children of Ruin is the strongest book in Adrian Tchaikovsky’s original Children of Time trilogy. Last month, I critiqued the first novel, in which he explores the development of jumping spiders into an intelligent species across thousands of years—and what happens when they encounter humanity. Children of Ruin keeps to the eight-appendage theme by tackling octopuses.Tchaikovsky published Children of Ruin in May 2019, four years after Children of Time.1 It won the British Science Fiction Association Award for Best Novel of 2019.2 I’ll review the third volume, Children of Memory, next month.Cloudessy, my consulting business providing fractional Chief Technology Officer services, is a sponsor of this newsletter. If you or someone you know needs professional tech guidance for their author, coaching, or independent publishing business, check out the ad at the end of this post. Thank you!Emulating its predecessor, Children of Ruin jumps (like a spider!) between two time frames.3 In the “past,” an Old Empire terraforming crew arrives at a distant system, finding a life-bearing world they name Nod. It possesses a biochemistry built on elements hazardous to humans and organic molecules evolution never produced on Earth.4 Mission commander Yusuf Baltiel stays to study Nod, but his eccentric colleague Disra Senkovi takes the terraforming equipment to the system’s ocean world, Damascus, along with a tank of octopuses and a supply of the same nanovirus that, light-years away, is busy uplifting the Portiids from Children of Time.5Thousands of years later, in the “present,” we encounter an expedition of the spider-like Portiids, accompanied by “Humans” (as Tchaikxovsky styles the humans modified to co-exist with them6). Aboard the Voyager—with the uploaded, much-altered Avrana Kern along as ship’s mind—the crew follows fragmentary radio signals to the same system, hoping to find lost cousins.7 What they find instead is a spacefaring octopus civilization in the middle of a catastrophe above a quarantined planet.Like the spiders in Children of Time, Tchaikovsky’s portrayal of the octopuses benefits from his strong grasp of evolutionary biology.8 For insight into cephalopods, he credits Peter Godfrey-Smith’s 2016 book, Other Minds, in the acknowledgements as “an invaluable research aid.”9 Cephalopods are a good choice for this second book. Our last common ancestor with the octopus lived some 600 million years ago, and was probably a flattened worm a few millimeters long. From that point, cephalopods followed a completely separate evolutionary track to a surprising intelligence.10 Dispersed nervous systems, with more than half of their roughly 500 million neurons in their arms rather than their heads, provide octopuses with something closer to mental committees than our compact, unified brains.11Tchaikovsky’s octopus characters exhibit a vocabulary describing this very different neurology. “The Crown sets strategy, but battlefield tactics are the province of the Reach, those sub-nodes that run the arms.”12 An octopus fights with its whole body, even aboard a spaceship: “her skin sings a furious hymn of battle and her arms calculate vectors and suggest firing solutions.”13Tchaikovsky derives a psychology from these creatures’ physiology, and a society from that psychology. Octopuses communicate in color with their skin, and in posture with their arms and the rest of their body.14 Their discourse carries far more mood and subtext than hard information.15 And a creature with no fixed body plan has no fixed convictions: the octopuses “hold no certainties” and don’t “let themselves be ruled by tradition or history or even how they themselves felt yesterday.”16The octopuses reflect real-life biology, but the life on Nod is brilliant speculation.At first, Baltiel’s scientists don’t recognize what they’ve found. When a crew member falls ill, a colleague insists nothing native could be responsible; Earth life is too different from Nodan life, and “[p]arasites are the most specialized of specialists!”17 They evolve to thrive within very specific environments, which could in no way resemble the human body. She is right about Earth and catastrophically wrong about Nod. The terraformers have disturbed a colonial organism whose cells encode and share memory, “microscopic cells trading encoded understandings like Earth bacteria exchange immunity genes.”18 It learns whatever it absorbs, and it is very, very ...
    Mehr anzeigen Weniger anzeigen
    30 Min.
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