#atmospheres — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #atmospheres, aggregated by home.social.
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How do lava-world exoplanets keep their atmospheres?
Artist’s concept from NASA. Lava-world exoplanets like this one might be expected to be airless, but some have…
#NewsBeep #News #Space #atmospheres #cosmicsandbar #lava-worldexoplanets #Science #UK #UnitedKingdom
https://www.newsbeep.com/uk/757458/ -
https://www.europesays.com/ie/668208/ How do lava-world exoplanets keep their atmospheres? #atmospheres #CosmicSandbar #Éire #IE #Ireland #LavaWorldExoplanets #Science #Space
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Theory-Defying Exoplanet Atmospheres Force a Rethink of Theories
https://atlas.whatip.xyz/post.php?slug=theory-defying-exoplanet-atmospheres-force-a-rethink-of-theories
<p>The discovery of lava worlds with atmospheres is challenging our theories of how atmospheres escape
#atmospheres #exoplanet #theories #defying -
An air-and-sea world where oxygen is everywhere, but arthropods never arise. Net result? A planet that's familiar, yet delightfully alien.
Read more at my #blog: https://www.adamasnemesis.com/2026/08/13/leviathans-of-the-airy-deep/
This post's featured illustration is from Iconographia Zoologica, and depicts a manta ray (similar to my world's ancestral "dipod").
#worldbuilding #scifi #sciencefiction #alienlife #aliens #oceanplanet #atmospheres #oxygenatmosphere #evolution #speculativeevolution
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An air-and-sea world where oxygen is everywhere, but arthropods never arise. Net result? A planet that's familiar, yet delightfully alien.
Read more at my #blog: https://www.adamasnemesis.com/2026/08/13/leviathans-of-the-airy-deep/
This post's featured illustration is from Iconographia Zoologica, and depicts a manta ray (similar to my world's ancestral "dipod").
#worldbuilding #scifi #sciencefiction #alienlife #aliens #oceanplanet #atmospheres #oxygenatmosphere #evolution #speculativeevolution
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An air-and-sea world where oxygen is everywhere, but arthropods never arise. Net result? A planet that's familiar, yet delightfully alien.
Read more at my #blog: https://www.adamasnemesis.com/2026/08/13/leviathans-of-the-airy-deep/
This post's featured illustration is from Iconographia Zoologica, and depicts a manta ray (similar to my world's ancestral "dipod").
#worldbuilding #scifi #sciencefiction #alienlife #aliens #oceanplanet #atmospheres #oxygenatmosphere #evolution #speculativeevolution
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An air-and-sea world where oxygen is everywhere, but arthropods never arise. Net result? A planet that's familiar, yet delightfully alien.
Read more at my #blog: https://www.adamasnemesis.com/2026/08/13/leviathans-of-the-airy-deep/
This post's featured illustration is from Iconographia Zoologica, and depicts a manta ray (similar to my world's ancestral "dipod").
#worldbuilding #scifi #sciencefiction #alienlife #aliens #oceanplanet #atmospheres #oxygenatmosphere #evolution #speculativeevolution
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An air-and-sea world where oxygen is everywhere, but arthropods never arise. Net result? A planet that's familiar, yet delightfully alien.
Read more at my #blog: https://www.adamasnemesis.com/2026/08/13/leviathans-of-the-airy-deep/
This post's featured illustration is from Iconographia Zoologica, and depicts a manta ray (similar to my world's ancestral "dipod").
#worldbuilding #scifi #sciencefiction #alienlife #aliens #oceanplanet #atmospheres #oxygenatmosphere #evolution #speculativeevolution
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The ESCAPE Mission Will Study the Evolution of Exoplanet Atmospheres
https://atlas.whatip.xyz/post.php?slug=the-escape-mission-will-study-the-evolution-of-exoplanet-atmospheres
<p>Exoplanets need to be habitable for a long time for complex life to develop
#atmospheres #exoplanets #evolution #habitable -
Katabatic winds? Twin suns? Even georeactors. All familiar ingredients, but combine them in one planet, and you have one truly alien world...
Read more at my #blog: https://www.adamasnemesis.com/2026/08/06/of-georeactors-katabatics-twin-suns-and-climatology/
This post's featured image is "Ripples in the Sky", captured in Iowa by me (hey, pressure waves figure, so why not?).
#scifi #sciencefiction #worldbuilding #geology #climatology #climate #alienplanet #planet #planetology #atmospheres #oceans
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Katabatic winds? Twin suns? Even georeactors. All familiar ingredients, but combine them in one planet, and you have one truly alien world...
Read more at my #blog: https://www.adamasnemesis.com/2026/08/06/of-georeactors-katabatics-twin-suns-and-climatology/
This post's featured image is "Ripples in the Sky", captured in Iowa by me (hey, pressure waves figure, so why not?).
#scifi #sciencefiction #worldbuilding #geology #climatology #climate #alienplanet #planet #planetology #atmospheres #oceans
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Katabatic winds? Twin suns? Even georeactors. All familiar ingredients, but combine them in one planet, and you have one truly alien world...
Read more at my #blog: https://www.adamasnemesis.com/2026/08/06/of-georeactors-katabatics-twin-suns-and-climatology/
This post's featured image is "Ripples in the Sky", captured in Iowa by me (hey, pressure waves figure, so why not?).
#scifi #sciencefiction #worldbuilding #geology #climatology #climate #alienplanet #planet #planetology #atmospheres #oceans
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Katabatic winds? Twin suns? Even georeactors. All familiar ingredients, but combine them in one planet, and you have one truly alien world...
Read more at my #blog: https://www.adamasnemesis.com/2026/08/06/of-georeactors-katabatics-twin-suns-and-climatology/
This post's featured image is "Ripples in the Sky", captured in Iowa by me (hey, pressure waves figure, so why not?).
#scifi #sciencefiction #worldbuilding #geology #climatology #climate #alienplanet #planet #planetology #atmospheres #oceans
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Katabatic winds? Twin suns? Even georeactors. All familiar ingredients, but combine them in one planet, and you have one truly alien world...
Read more at my #blog: https://www.adamasnemesis.com/2026/08/06/of-georeactors-katabatics-twin-suns-and-climatology/
This post's featured image is "Ripples in the Sky", captured in Iowa by me (hey, pressure waves figure, so why not?).
#scifi #sciencefiction #worldbuilding #geology #climatology #climate #alienplanet #planet #planetology #atmospheres #oceans
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White Paper Makes the Case for a European Exoplanet Interferometer
Like and share if you enjoyed this.
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RE: https://mastodon.social/@proseandpassion/116935425709917770
Where in #space can #planets with #atmospheres be found? C. Cherubim et al. (2026) used #nearinfraredspectroscopy to characterize a #rocky #exoplanet orbiting its host star within the #habitablezone. Planet #LHS1140b exhibits #helium #absorption in its atmosphere, a feature the authors attribute to a helium-dominated #upperatmosphericlayer.
© #StefanFWirth, July 2026, Berlin
Reference
C. Cherubim et al. (2026)
https://doi.org/10.1126/science.aea9708 -
RE: https://mastodon.social/@proseandpassion/116935425709917770
Where in #space can #planets with #atmospheres be found? C. Cherubim et al. (2026) used #nearinfraredspectroscopy to characterize a #rocky #exoplanet orbiting its host star within the #habitablezone. Planet #LHS1140b exhibits #helium #absorption in its atmosphere, a feature the authors attribute to a helium-dominated #upperatmosphericlayer.
© #StefanFWirth, July 2026, Berlin
Reference
C. Cherubim et al. (2026)
https://doi.org/10.1126/science.aea9708 -
RE: https://mastodon.social/@proseandpassion/116935425709917770
Where in #space can #planets with #atmospheres be found? C. Cherubim et al. (2026) used #nearinfraredspectroscopy to characterize a #rocky #exoplanet orbiting its host star within the #habitablezone. Planet #LHS1140b exhibits #helium #absorption in its atmosphere, a feature the authors attribute to a helium-dominated #upperatmosphericlayer.
© #StefanFWirth, July 2026, Berlin
Reference
C. Cherubim et al. (2026)
https://doi.org/10.1126/science.aea9708 -
RE: https://mastodon.social/@proseandpassion/116935425709917770
Where in #space can #planets with #atmospheres be found? C. Cherubim et al. (2026) used #nearinfraredspectroscopy to characterize a #rocky #exoplanet orbiting its host star within the #habitablezone. Planet #LHS1140b exhibits #helium #absorption in its atmosphere, a feature the authors attribute to a helium-dominated #upperatmosphericlayer.
© #StefanFWirth, July 2026, Berlin
Reference
C. Cherubim et al. (2026)
https://doi.org/10.1126/science.aea9708 -
RE: https://mastodon.social/@proseandpassion/116935425709917770
Where in #space can #planets with #atmospheres be found? C. Cherubim et al. (2026) used #nearinfraredspectroscopy to characterize a #rocky #exoplanet orbiting its host star within the #habitablezone. Planet #LHS1140b exhibits #helium #absorption in its atmosphere, a feature the authors attribute to a helium-dominated #upperatmosphericlayer.
© #StefanFWirth, July 2026, Berlin
Reference
C. Cherubim et al. (2026)
https://doi.org/10.1126/science.aea9708 -
Nautilus Array to Track Missing Exoplanet Atmospheres
https://atlas.whatip.xyz/post.php?slug=nautilus-array-to-track-missing-exoplanet-atmospheres
<p>Exoplanet atmospheres have become prima targets for astrobiologists in the search for life beyond Earth
#atmospheres #exoplanet #nautilus #missing -
The cosmic shoreline concept was introduced to separate #planets with #atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation to the planetary escape velocity, using the Solar System planets to anchor the empirical relation.
The #exoplanet community has since attempted to refine the cosmic shoreline to provide a consistent ranking or prioritisation tool for exoplanet observations – i.e., to quickly identify which small #planets are most likely to have retained an #atmosphere.
In a new paper, astronomers use an empirical approach to refine the cosmic shoreline concept.
The Empirical Exoplanet Cosmic Shoreline (EECS) exhibits a significantly steeper slope than previously theorized, while consistently categorising Solar System moons and dwarf planets according to their atmospheric properties.
Applied to planets orbiting M dwarfs, the EECS suggests that a larger fraction retain atmospheres than predicted by classical models, but incorporating revised XUV fluence histories for low-mass M dwarfs reveals severe atmospheric vulnerability.
#astronomy #astrobiology
https://astrobiology.com/2026/06/an-empirical-determination-of-the-cosmic-shoreline-2.htmlPaper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865 -
The cosmic shoreline concept was introduced to separate #planets with #atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation to the planetary escape velocity, using the Solar System planets to anchor the empirical relation.
The #exoplanet community has since attempted to refine the cosmic shoreline to provide a consistent ranking or prioritisation tool for exoplanet observations – i.e., to quickly identify which small #planets are most likely to have retained an #atmosphere.
In a new paper, astronomers use an empirical approach to refine the cosmic shoreline concept.
The Empirical Exoplanet Cosmic Shoreline (EECS) exhibits a significantly steeper slope than previously theorized, while consistently categorising Solar System moons and dwarf planets according to their atmospheric properties.
Applied to planets orbiting M dwarfs, the EECS suggests that a larger fraction retain atmospheres than predicted by classical models, but incorporating revised XUV fluence histories for low-mass M dwarfs reveals severe atmospheric vulnerability.
#astronomy #astrobiology
https://astrobiology.com/2026/06/an-empirical-determination-of-the-cosmic-shoreline-2.htmlPaper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865 -
The cosmic shoreline concept was introduced to separate #planets with #atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation to the planetary escape velocity, using the Solar System planets to anchor the empirical relation.
The #exoplanet community has since attempted to refine the cosmic shoreline to provide a consistent ranking or prioritisation tool for exoplanet observations – i.e., to quickly identify which small #planets are most likely to have retained an #atmosphere.
In a new paper, astronomers use an empirical approach to refine the cosmic shoreline concept.
The Empirical Exoplanet Cosmic Shoreline (EECS) exhibits a significantly steeper slope than previously theorized, while consistently categorising Solar System moons and dwarf planets according to their atmospheric properties.
Applied to planets orbiting M dwarfs, the EECS suggests that a larger fraction retain atmospheres than predicted by classical models, but incorporating revised XUV fluence histories for low-mass M dwarfs reveals severe atmospheric vulnerability.
#astronomy #astrobiology
https://astrobiology.com/2026/06/an-empirical-determination-of-the-cosmic-shoreline-2.htmlPaper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865 -
The cosmic shoreline concept was introduced to separate #planets with #atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation to the planetary escape velocity, using the Solar System planets to anchor the empirical relation.
The #exoplanet community has since attempted to refine the cosmic shoreline to provide a consistent ranking or prioritisation tool for exoplanet observations – i.e., to quickly identify which small #planets are most likely to have retained an #atmosphere.
In a new paper, astronomers use an empirical approach to refine the cosmic shoreline concept.
The Empirical Exoplanet Cosmic Shoreline (EECS) exhibits a significantly steeper slope than previously theorized, while consistently categorising Solar System moons and dwarf planets according to their atmospheric properties.
Applied to planets orbiting M dwarfs, the EECS suggests that a larger fraction retain atmospheres than predicted by classical models, but incorporating revised XUV fluence histories for low-mass M dwarfs reveals severe atmospheric vulnerability.
#astronomy #astrobiology
https://astrobiology.com/2026/06/an-empirical-determination-of-the-cosmic-shoreline-2.htmlPaper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865 -
The cosmic shoreline concept was introduced to separate #planets with #atmospheres from those without, by relating the cumulative X-ray and extreme-ultraviolet (XUV) instellation to the planetary escape velocity, using the Solar System planets to anchor the empirical relation.
The #exoplanet community has since attempted to refine the cosmic shoreline to provide a consistent ranking or prioritisation tool for exoplanet observations – i.e., to quickly identify which small #planets are most likely to have retained an #atmosphere.
In a new paper, astronomers use an empirical approach to refine the cosmic shoreline concept.
The Empirical Exoplanet Cosmic Shoreline (EECS) exhibits a significantly steeper slope than previously theorized, while consistently categorising Solar System moons and dwarf planets according to their atmospheric properties.
Applied to planets orbiting M dwarfs, the EECS suggests that a larger fraction retain atmospheres than predicted by classical models, but incorporating revised XUV fluence histories for low-mass M dwarfs reveals severe atmospheric vulnerability.
#astronomy #astrobiology
https://astrobiology.com/2026/06/an-empirical-determination-of-the-cosmic-shoreline-2.htmlPaper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865 -
JWST just mapped the morning weather on a planet 690 light-years away, and the forecast of sand-like clouds exposed a 100-fold bias in how exoplanet atmospheres
https://atlas.whatip.xyz/post.php?slug=jwst-just-mapped-the-morning-weather-on-a-planet-690-light-years-away-and-the-forecast-of-sand-like-clouds-exposed-a-100-fold-bias-in-how-exoplanet-atmospheres
<p>JWST just mapped the morning weather on a planet 690 light-years away
#atmospheres #exoplanet #morning #weather -
JWST just mapped the morning weather on a planet 690 light-years away, and the forecast of sand-like clouds exposed a 100-fold bias in how exoplanet atmospheres
https://atlas.whatip.xyz/post.php?slug=jwst-just-mapped-the-morning-weather-on-a-planet-690-light-years-away-and-the-forecast-of-sand-like-clouds-exposed-a-100-fold-bias-in-how-exoplanet-atmospheres
<p>JWST just mapped the morning weather on a planet 690 light-years away
#atmospheres #exoplanet #morning #weather -
JWST just mapped the morning weather on a planet 690 light-years away, and the forecast of sand-like clouds exposed a 100-fold bias in how exoplanet atmospheres
https://atlas.whatip.xyz/post.php?slug=jwst-just-mapped-the-morning-weather-on-a-planet-690-light-years-away-and-the-forecast-of-sand-like-clouds-exposed-a-100-fold-bias-in-how-exoplanet-atmospheres
<p>JWST just mapped the morning weather on a planet 690 light-years away
#atmospheres #exoplanet #morning #weather -
JWST just mapped the morning weather on a planet 690 light-years away, and the forecast of sand-like clouds exposed a 100-fold bias in how exoplanet atmospheres
https://atlas.whatip.xyz/post.php?slug=jwst-just-mapped-the-morning-weather-on-a-planet-690-light-years-away-and-the-forecast-of-sand-like-clouds-exposed-a-100-fold-bias-in-how-exoplanet-atmospheres
<p>JWST just mapped the morning weather on a planet 690 light-years away
#atmospheres #exoplanet #morning #weather -
Our first “Earth-like” #Exoplanets probably won’t have #Atmospheres : Medium
#Earth is now #Heating up twice as fast as in previous decades : Medium
How a #Warmer #World and more #Rain could #Transform #Antarctica : Guardian
Latest #KnowledgeLinks
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Our first “Earth-like” #Exoplanets probably won’t have #Atmospheres : Medium
#Earth is now #Heating up twice as fast as in previous decades : Medium
How a #Warmer #World and more #Rain could #Transform #Antarctica : Guardian
Latest #KnowledgeLinks
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Our first “Earth-like” #Exoplanets probably won’t have #Atmospheres : Medium
#Earth is now #Heating up twice as fast as in previous decades : Medium
How a #Warmer #World and more #Rain could #Transform #Antarctica : Guardian
Latest #KnowledgeLinks
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Our first “Earth-like” #Exoplanets probably won’t have #Atmospheres : Medium
#Earth is now #Heating up twice as fast as in previous decades : Medium
How a #Warmer #World and more #Rain could #Transform #Antarctica : Guardian
Latest #KnowledgeLinks
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Our first “Earth-like” #Exoplanets probably won’t have #Atmospheres : Medium
#Earth is now #Heating up twice as fast as in previous decades : Medium
How a #Warmer #World and more #Rain could #Transform #Antarctica : Guardian
Latest #KnowledgeLinks
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Engine by Evenant 🎛️
50 patches from global inst. sampling: cellos, flutes, synths, + more. Pads, basses, drones, atmospheres.🎁 FREE (reg. $79) for a limited time
🔗 Link in bio!#freeplugin #kontakt #sounddesign #atmospheres #evenant #musicproduction
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Engine by Evenant 🎛️
50 patches from global inst. sampling: cellos, flutes, synths, + more. Pads, basses, drones, atmospheres.🎁 FREE (reg. $79) for a limited time
🔗 Link in bio!#freeplugin #kontakt #sounddesign #atmospheres #evenant #musicproduction
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Engine by Evenant 🎛️
50 patches from global inst. sampling: cellos, flutes, synths, + more. Pads, basses, drones, atmospheres.🎁 FREE (reg. $79) for a limited time
🔗 Link in bio!#freeplugin #kontakt #sounddesign #atmospheres #evenant #musicproduction
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Engine by Evenant 🎛️
50 patches from global inst. sampling: cellos, flutes, synths, + more. Pads, basses, drones, atmospheres.🎁 FREE (reg. $79) for a limited time
🔗 Link in bio!#freeplugin #kontakt #sounddesign #atmospheres #evenant #musicproduction
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Engine by Evenant 🎛️
50 patches from global inst. sampling: cellos, flutes, synths, + more. Pads, basses, drones, atmospheres.🎁 FREE (reg. $79) for a limited time
🔗 Link in bio!#freeplugin #kontakt #sounddesign #atmospheres #evenant #musicproduction
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Here is a problem that has been quietly gnawing at astronomers for decades.
The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.
It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.
The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.
Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.
But there is a solution.
#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.
Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.
Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.
That something would then be life itself.
#astrobiology #astronomy
https://phys.org/news/2026-03-life.htmlPaper by Walker et al. (2026): https://arxiv.org/abs/2603.11086
-
Here is a problem that has been quietly gnawing at astronomers for decades.
The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.
It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.
The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.
Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.
But there is a solution.
#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.
Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.
Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.
That something would then be life itself.
#astrobiology #astronomy
https://phys.org/news/2026-03-life.htmlPaper by Walker et al. (2026): https://arxiv.org/abs/2603.11086
-
Here is a problem that has been quietly gnawing at astronomers for decades.
The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.
It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.
The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.
Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.
But there is a solution.
#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.
Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.
Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.
That something would then be life itself.
#astrobiology #astronomy
https://phys.org/news/2026-03-life.htmlPaper by Walker et al. (2026): https://arxiv.org/abs/2603.11086
-
Here is a problem that has been quietly gnawing at astronomers for decades.
The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.
It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.
The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.
Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.
But there is a solution.
#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.
Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.
Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.
That something would then be life itself.
#astrobiology #astronomy
https://phys.org/news/2026-03-life.htmlPaper by Walker et al. (2026): https://arxiv.org/abs/2603.11086
-
Here is a problem that has been quietly gnawing at astronomers for decades.
The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.
It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.
The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.
Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.
But there is a solution.
#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.
Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.
Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.
That something would then be life itself.
#astrobiology #astronomy
https://phys.org/news/2026-03-life.htmlPaper by Walker et al. (2026): https://arxiv.org/abs/2603.11086
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At altitude, the sun really warms you (and your garden) up; how far could this effect be taken on an alien planet? Further than you think...
Read more at my #blog: https://www.adamasnemesis.com/2026/03/19/the-ultimate-banana-belt/
This post's featured image is a photo I made of the midnight sun at Nordkapp (yes, it was the exact moment of solar midnight).
#worldbuilding #atmospheres #agriculture #bananabelt #climate #gardening #plants #scifi #sciencefiction
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At altitude, the sun really warms you (and your garden) up; how far could this effect be taken on an alien planet? Further than you think...
Read more at my #blog: https://www.adamasnemesis.com/2026/03/19/the-ultimate-banana-belt/
This post's featured image is a photo I made of the midnight sun at Nordkapp (yes, it was the exact moment of solar midnight).
#worldbuilding #atmospheres #agriculture #bananabelt #climate #gardening #plants #scifi #sciencefiction
-
At altitude, the sun really warms you (and your garden) up; how far could this effect be taken on an alien planet? Further than you think...
Read more at my #blog: https://www.adamasnemesis.com/2026/03/19/the-ultimate-banana-belt/
This post's featured image is a photo I made of the midnight sun at Nordkapp (yes, it was the exact moment of solar midnight).
#worldbuilding #atmospheres #agriculture #bananabelt #climate #gardening #plants #scifi #sciencefiction
-
At altitude, the sun really warms you (and your garden) up; how far could this effect be taken on an alien planet? Further than you think...
Read more at my #blog: https://www.adamasnemesis.com/2026/03/19/the-ultimate-banana-belt/
This post's featured image is a photo I made of the midnight sun at Nordkapp (yes, it was the exact moment of solar midnight).
#worldbuilding #atmospheres #agriculture #bananabelt #climate #gardening #plants #scifi #sciencefiction
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At altitude, the sun really warms you (and your garden) up; how far could this effect be taken on an alien planet? Further than you think...
Read more at my #blog: https://www.adamasnemesis.com/2026/03/19/the-ultimate-banana-belt/
This post's featured image is a photo I made of the midnight sun at Nordkapp (yes, it was the exact moment of solar midnight).
#worldbuilding #atmospheres #agriculture #bananabelt #climate #gardening #plants #scifi #sciencefiction
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Take a biosphere that sequesters the common atmospheric elements, see what's left over, and you might have a truly rich sci-fi sandbox...
Read more at my #blog: https://www.adamasnemesis.com/2026/02/20/worldbuilding-ghost-atmospheres/
This post's featured image is "Ilmatar" by Robert Wilhelm Ekman.
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Take a biosphere that sequesters the common atmospheric elements, see what's left over, and you might have a truly rich sci-fi sandbox...
Read more at my #blog: https://www.adamasnemesis.com/2026/02/20/worldbuilding-ghost-atmospheres/
This post's featured image is "Ilmatar" by Robert Wilhelm Ekman.
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Take a biosphere that sequesters the common atmospheric elements, see what's left over, and you might have a truly rich sci-fi sandbox...
Read more at my #blog: https://www.adamasnemesis.com/2026/02/20/worldbuilding-ghost-atmospheres/
This post's featured image is "Ilmatar" by Robert Wilhelm Ekman.
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Take a biosphere that sequesters the common atmospheric elements, see what's left over, and you might have a truly rich sci-fi sandbox...
Read more at my #blog: https://www.adamasnemesis.com/2026/02/20/worldbuilding-ghost-atmospheres/
This post's featured image is "Ilmatar" by Robert Wilhelm Ekman.
-
Take a biosphere that sequesters the common atmospheric elements, see what's left over, and you might have a truly rich sci-fi sandbox...
Read more at my #blog: https://www.adamasnemesis.com/2026/02/20/worldbuilding-ghost-atmospheres/
This post's featured image is "Ilmatar" by Robert Wilhelm Ekman.
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We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.
One of these is whether #Earth is the only place that harbours #life.
In the last 30 years, the question of whether the Sun is unique in hosting a planetary system has been resoundingly answered: we now know of thousands of #exoplanets orbiting other #stars.
But can we use telescopes to detect whether any of these distant worlds also harbour life?
A promising method is to analyse the gases present in the #atmospheres of these #planets.
Astonishingly, we can identify #molecules present in the atmospheres of exoplanets.
Quantum mechanics causes each atmospheric chemical to have its own distinct barcode-like pattern, which it leaves on the light passing through it.
By collecting starlight that has been filtered through an #exoplanet’s atmosphere, telescopes can see the barcodes of the molecules making up that atmosphere.
To take advantage of this, the planet needs to #transit – pass in front of – the star from our point of view.
#astronomy #astrobiology
https://theconversation.com/how-astronomers-plan-to-detect-the-signatures-of-alien-life-in-the-atmospheres-of-distant-planets-272821 -
We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.
One of these is whether #Earth is the only place that harbours #life.
In the last 30 years, the question of whether the Sun is unique in hosting a planetary system has been resoundingly answered: we now know of thousands of #exoplanets orbiting other #stars.
But can we use telescopes to detect whether any of these distant worlds also harbour life?
A promising method is to analyse the gases present in the #atmospheres of these #planets.
Astonishingly, we can identify #molecules present in the atmospheres of exoplanets.
Quantum mechanics causes each atmospheric chemical to have its own distinct barcode-like pattern, which it leaves on the light passing through it.
By collecting starlight that has been filtered through an #exoplanet’s atmosphere, telescopes can see the barcodes of the molecules making up that atmosphere.
To take advantage of this, the planet needs to #transit – pass in front of – the star from our point of view.
#astronomy #astrobiology
https://theconversation.com/how-astronomers-plan-to-detect-the-signatures-of-alien-life-in-the-atmospheres-of-distant-planets-272821 -
We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.
One of these is whether #Earth is the only place that harbours #life.
In the last 30 years, the question of whether the Sun is unique in hosting a planetary system has been resoundingly answered: we now know of thousands of #exoplanets orbiting other #stars.
But can we use telescopes to detect whether any of these distant worlds also harbour life?
A promising method is to analyse the gases present in the #atmospheres of these #planets.
Astonishingly, we can identify #molecules present in the atmospheres of exoplanets.
Quantum mechanics causes each atmospheric chemical to have its own distinct barcode-like pattern, which it leaves on the light passing through it.
By collecting starlight that has been filtered through an #exoplanet’s atmosphere, telescopes can see the barcodes of the molecules making up that atmosphere.
To take advantage of this, the planet needs to #transit – pass in front of – the star from our point of view.
#astronomy #astrobiology
https://theconversation.com/how-astronomers-plan-to-detect-the-signatures-of-alien-life-in-the-atmospheres-of-distant-planets-272821 -
We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.
One of these is whether #Earth is the only place that harbours #life.
In the last 30 years, the question of whether the Sun is unique in hosting a planetary system has been resoundingly answered: we now know of thousands of #exoplanets orbiting other #stars.
But can we use telescopes to detect whether any of these distant worlds also harbour life?
A promising method is to analyse the gases present in the #atmospheres of these #planets.
Astonishingly, we can identify #molecules present in the atmospheres of exoplanets.
Quantum mechanics causes each atmospheric chemical to have its own distinct barcode-like pattern, which it leaves on the light passing through it.
By collecting starlight that has been filtered through an #exoplanet’s atmosphere, telescopes can see the barcodes of the molecules making up that atmosphere.
To take advantage of this, the planet needs to #transit – pass in front of – the star from our point of view.
#astronomy #astrobiology
https://theconversation.com/how-astronomers-plan-to-detect-the-signatures-of-alien-life-in-the-atmospheres-of-distant-planets-272821 -
We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.
One of these is whether #Earth is the only place that harbours #life.
In the last 30 years, the question of whether the Sun is unique in hosting a planetary system has been resoundingly answered: we now know of thousands of #exoplanets orbiting other #stars.
But can we use telescopes to detect whether any of these distant worlds also harbour life?
A promising method is to analyse the gases present in the #atmospheres of these #planets.
Astonishingly, we can identify #molecules present in the atmospheres of exoplanets.
Quantum mechanics causes each atmospheric chemical to have its own distinct barcode-like pattern, which it leaves on the light passing through it.
By collecting starlight that has been filtered through an #exoplanet’s atmosphere, telescopes can see the barcodes of the molecules making up that atmosphere.
To take advantage of this, the planet needs to #transit – pass in front of – the star from our point of view.
#astronomy #astrobiology
https://theconversation.com/how-astronomers-plan-to-detect-the-signatures-of-alien-life-in-the-atmospheres-of-distant-planets-272821