#exoplanet — Public Fediverse posts

It’s amazing what people will do. Here’s a photo of Exoplanet 13562. It looks like an edible Earth fruit. But really, it’s an exoplanet missing its atmosphere. No one knows why the air disappeared, but billions of litres of water is frozen under the blue crust. The planet is bizarrely covered with Lazurite and ancient canals are visible to the naked eye. Someone with a sense of humor, photoshopped this planet to look like a plum. Adding stem and leaves and a little nub in the end. I’m all for a joke, but it’s wrong to say a photograph is something it’s not. People who post a photo and then make up some some crazy Sci-Fi story to go along with it, should be thrown in the stocks and have rotten tomatoes tossed at them. Actually bananas, have bananas tossed at them. I like bananas. Bananas are good.

#scifi #sci-fi #exoplanet #MicroFiction #bloomscrolling #nature #photography

White Paper Makes the Case for a European Exoplanet Interferometer

Like and share if you enjoyed this.

https://1ban.news/life-mission-exoplanet-atmospheres/

#1ban #life #mission #exoplanet #atmospheres #space

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

16-Jul-2026
Detected: Rocky, habitable-zone #exoplanet with an #atmosphere
A team of astronomers has detected evidence of an atmosphere on a rocky planet orbiting in the habitable zone of its host star.

^^exciting #astrobiology news

https://www.eurekalert.org/news-releases/1135989

#science #rockyPlanets

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.html

Paper by Meni-Gallardo & Pallé (2026):
https://arxiv.org/abs/2508.12865

The Ring Current in Earth's Magnetosphere ✨

#AllSkyImaging #Ast #Astrophysics #Exoplanet #Galaxy #Magnetosphere #RingCurrent #Space

⏩ 2 new pictures and 1 new video from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=10&user=OptimusPrimeBot&ilshowall=1&offset=20260514125724

Wie viel Wasser braucht ein Exoplanet? Warum extrasolare Wüstenplaneten wahrscheinlich kein außerirdisches Leben haben. #Wüstenplanet #Exoplanet #Planet #Wasser #habitableZone
https://www.scinexx.de/news/kosmos/wie-viel-wasser-braucht-ein-exoplanet/

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.html

Paper by Walker et al. (2026): https://arxiv.org/abs/2603.11086

A Cool Earth-sized Planet Candidate Transiting a Tenth Magnitude K-dwarf From K2

https://arxiv.org/abs/2601.19870

#exoplanets #exoplanet #hd137010b #kepler #keplerk2

Nově objevená exoplaneta, nacházející se relativně blízko (146 světelných let), má asi 51% šanci nacházet se v obyvatelné zóně své hvězdy. Hodně by záviselo na složení a hustotě atmosféry - pravděpodobnost, že klima planety připomíná spíš Mars, než Zemi, je poměrně velká.

Planeta HD 137010 b byla objevena analýzou starších dat observatoře Kepler.

Planety na vzdálenějších oběžných drahách, podobných Zemi, je daleko těžší v datových sadách identifikovat. Přechod této planety přes pozorovatelný kotouč svojí mateřské hvězdy trvá 10 dní (v případě Země by to bylo 13 dnů)

https://astrobiology.com/2026/01/exoplanet-candidate-hd-137010-b-an-ice-cold-earth-analog.html

#hd137010b #exoplanet #exolife #astronomy #kepler

Viewing an Exoplanet Transmission Spectrum 🛰️

#Exoplanet #ExoplanetAtmospheres #Fleet #Heliopause #Heliophysics #Heliosphere #Magnetopause #Magnetosphere

⏩ 3 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=22&user=OptimusPrimeBot&ilshowall=1&offset=20260128125704

#KnowledgeBit: #Kepler-452b is an #Exoplanet sometimes quoted to be an #Earth2.0 or Earth's Cousin based on its characteristics. It is the first potentially rocky super-Earth planet discovered orbiting within the habitable zone of a star very similar to the Sun.

Of the 1,030 confirmed planets from Kepler, a dozen are less than twice the size of Earth and reside in the habitable zone of their host stars.

https://knowledgezone.co.in/resources/gk/history/5b547c0d24c1440007e6ff00

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

What #Scientists Found Moving Under The #Appalachians : Medium

#Scientists #Discover ‘#BlackWidow’ #Exoplanet That Defies Explanation: Misc

Long live the #Aeonophiles! : Misc

Latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

Erster Exoplanet mit doppeltem Schweif. Heißer Gasriese WASP-121b verliert Helium in gleich zwei langen Strömen. #Exoplanet #WASP121b #Astronomie #HotJupiter
https://www.scinexx.de/news/kosmos/erster-exoplanet-mit-doppeltem-schweif/

Erster Exoplanet mit doppeltem Schweif. Heißer Gasriese WASP-121b verliert Helium in gleich zwei langen Strömen. #Exoplanet #WASP121b #Astronomie #HotJupiter
https://www.scinexx.de/news/kosmos/erster-exoplanet-mit-doppeltem-schweif/

Erster Exoplanet mit doppeltem Schweif. Heißer Gasriese WASP-121b verliert Helium in gleich zwei langen Strömen. #Exoplanet #WASP121b #Astronomie #HotJupiter
https://www.scinexx.de/news/kosmos/erster-exoplanet-mit-doppeltem-schweif/

Erster Exoplanet mit doppeltem Schweif. Heißer Gasriese WASP-121b verliert Helium in gleich zwei langen Strömen. #Exoplanet #WASP121b #Astronomie #HotJupiter
https://www.scinexx.de/news/kosmos/erster-exoplanet-mit-doppeltem-schweif/

Erster Exoplanet mit doppeltem Schweif. Heißer Gasriese WASP-121b verliert Helium in gleich zwei langen Strömen. #Exoplanet #WASP121b #Astronomie #HotJupiter
https://www.scinexx.de/news/kosmos/erster-exoplanet-mit-doppeltem-schweif/

WASP-121b: Höllenplanet aus der Kälte. Daten des James-Webb-Teleskops klären Entstehungsort des ultraheißen Gasriesen. #Exoplanet #JWST #WASP121b #astronomie
https://www.scinexx.de/news/kosmos/wasp-121b-hoellenplanet-aus-der-kaelte/

WASP-121b: Höllenplanet aus der Kälte. Daten des James-Webb-Teleskops klären Entstehungsort des ultraheißen Gasriesen. #Exoplanet #JWST #WASP121b #astronomie
https://www.scinexx.de/news/kosmos/wasp-121b-hoellenplanet-aus-der-kaelte/

WASP-121b: Höllenplanet aus der Kälte. Daten des James-Webb-Teleskops klären Entstehungsort des ultraheißen Gasriesen. #Exoplanet #JWST #WASP121b #astronomie
https://www.scinexx.de/news/kosmos/wasp-121b-hoellenplanet-aus-der-kaelte/

WASP-121b: Höllenplanet aus der Kälte. Daten des James-Webb-Teleskops klären Entstehungsort des ultraheißen Gasriesen. #Exoplanet #JWST #WASP121b #astronomie
https://www.scinexx.de/news/kosmos/wasp-121b-hoellenplanet-aus-der-kaelte/

WASP-121b: Höllenplanet aus der Kälte. Daten des James-Webb-Teleskops klären Entstehungsort des ultraheißen Gasriesen. #Exoplanet #JWST #WASP121b #astronomie
https://www.scinexx.de/news/kosmos/wasp-121b-hoellenplanet-aus-der-kaelte/

#MPIA:
"
Wo der extrem heiße Exoplanet Wasp-121b entstand
"
"Methan und Siliziumoxid in der Atmosphäre des Planeten deuten auf eine Herkunft in einer Region hin, die dem Bereich der Gas- und Eisriesen in unserem Sonnensystem entspricht"

https://www.mpg.de/24499781/ursprung-explanet-wasp-121b

2.6.2025

#Astronomie #Exoplanet #JWST #Methan #NIRSpec #Planetologie #Siliziumoxid #WASP121b #Weltraumteleskop

#MPIA:
"
Wo der extrem heiße Exoplanet Wasp-121b entstand
"
"Methan und Siliziumoxid in der Atmosphäre des Planeten deuten auf eine Herkunft in einer Region hin, die dem Bereich der Gas- und Eisriesen in unserem Sonnensystem entspricht"

https://www.mpg.de/24499781/ursprung-explanet-wasp-121b

2.6.2025

#Astronomie #Exoplanet #JWST #Methan #NIRSpec #Planetologie #Siliziumoxid #WASP121b #Weltraumteleskop

#MPIA:
"
Wo der extrem heiße Exoplanet Wasp-121b entstand
"
"Methan und Siliziumoxid in der Atmosphäre des Planeten deuten auf eine Herkunft in einer Region hin, die dem Bereich der Gas- und Eisriesen in unserem Sonnensystem entspricht"

https://www.mpg.de/24499781/ursprung-explanet-wasp-121b

2.6.2025

#Astronomie #Exoplanet #JWST #Methan #NIRSpec #Planetologie #Siliziumoxid #WASP121b #Weltraumteleskop

#MPIA:
"
Wo der extrem heiße Exoplanet Wasp-121b entstand
"
"Methan und Siliziumoxid in der Atmosphäre des Planeten deuten auf eine Herkunft in einer Region hin, die dem Bereich der Gas- und Eisriesen in unserem Sonnensystem entspricht"

https://www.mpg.de/24499781/ursprung-explanet-wasp-121b

2.6.2025

#Astronomie #Exoplanet #JWST #Methan #NIRSpec #Planetologie #Siliziumoxid #WASP121b #Weltraumteleskop

#MPIA:
"
Wo der extrem heiße Exoplanet Wasp-121b entstand
"
"Methan und Siliziumoxid in der Atmosphäre des Planeten deuten auf eine Herkunft in einer Region hin, die dem Bereich der Gas- und Eisriesen in unserem Sonnensystem entspricht"

https://www.mpg.de/24499781/ursprung-explanet-wasp-121b

2.6.2025

#Astronomie #Exoplanet #JWST #Methan #NIRSpec #Planetologie #Siliziumoxid #WASP121b #Weltraumteleskop

Stoked to find an editorial on the fiery exoplanet WASP-121b "Tylos" in the relaunch issue of Heavy Metal Magazine, by Editor-in-Chief Frank Forte.

#HeavyMetal #HeavyMetalMagazine #Astronomy #Astrodon #Astrophysics #FrankForte #science #WASP121b #Tylos #exoplanet #scifi #sciencefiction #magazine

Stoked to find an editorial on the fiery exoplanet WASP-121b "Tylos" in the relaunch issue of Heavy Metal Magazine, by Editor-in-Chief Frank Forte.

#HeavyMetal #HeavyMetalMagazine #Astronomy #Astrodon #Astrophysics #FrankForte #science #WASP121b #Tylos #exoplanet #scifi #sciencefiction #magazine

Stoked to find an editorial on the fiery exoplanet WASP-121b "Tylos" in the relaunch issue of Heavy Metal Magazine, by Editor-in-Chief Frank Forte.

#HeavyMetal #HeavyMetalMagazine #Astronomy #Astrodon #Astrophysics #FrankForte #science #WASP121b #Tylos #exoplanet #scifi #sciencefiction #magazine

Stoked to find an editorial on the fiery exoplanet WASP-121b "Tylos" in the relaunch issue of Heavy Metal Magazine, by Editor-in-Chief Frank Forte.

#HeavyMetal #HeavyMetalMagazine #Astronomy #Astrodon #Astrophysics #FrankForte #science #WASP121b #Tylos #exoplanet #scifi #sciencefiction #magazine

Stoked to find an editorial on the fiery exoplanet WASP-121b "Tylos" in the relaunch issue of Heavy Metal Magazine, by Editor-in-Chief Frank Forte.

#HeavyMetal #HeavyMetalMagazine #Astronomy #Astrodon #Astrophysics #FrankForte #science #WASP121b #Tylos #exoplanet #scifi #sciencefiction #magazine

Außerirdisches Leben auf naher Wasserwelt? Astronomen bestätigen potenzielle Biosignatur auf dem habitablen Exoplaneten K2-18b. #Exoplanet #Außerirdisch #Biosignatur #JWST #Astronomie #LebenimAll #k218b
https://www.scinexx.de/news/kosmos/ausserirdisches-leben-auf-naher-wasserwelt/

#Astronomie | #Wissenschaft
Auf riesiger #Wasserwelt: Bislang eindeutigster Hinweis auf außerirdisches Leben

https://www.heise.de/news/Auf-riesiger-Wasserwelt-Bislang-eindeutigster-Hinweis-auf-ausserirdisches-Leben-10355034.html

#Space #Exoplanet #Außerirdisch #Alien

#WASP121b:

#Exoplanet mit #Eisenregen und heftigen #Winden

Ein merkwürdiger Jetstream, ein neuartiges #Klima und die Entdeckung von #Titan – eine #Forschungsgruppe hat in die #Atmosphäre des #Exoplaneten Wasp-121 b geblickt.

https://www.golem.de/news/wasp-121-b-exoplanet-mit-eisenregen-und-heftigen-winden-2502-193542.html

#WASP121b:

#Exoplanet mit #Eisenregen und heftigen #Winden

Ein merkwürdiger Jetstream, ein neuartiges #Klima und die Entdeckung von #Titan – eine #Forschungsgruppe hat in die #Atmosphäre des #Exoplaneten Wasp-121 b geblickt.

https://www.golem.de/news/wasp-121-b-exoplanet-mit-eisenregen-und-heftigen-winden-2502-193542.html

Extrasolarer Gasriese hat dreistöckige Winde. Erste 3D-Kartierung einer Exoplaneten-Gashülle enthüllt einzigartiges Wettermuster. #Exoplanet #Gasriese #Atmosphaere #Astronomie #Planet #WASP121b
https://www.scinexx.de/news/kosmos/extrasolarer-gasriese-hat-dreistoeckige-winde/

Extrasolarer Gasriese hat dreistöckige Winde. Erste 3D-Kartierung einer Exoplaneten-Gashülle enthüllt einzigartiges Wettermuster. #Exoplanet #Gasriese #Atmosphaere #Astronomie #Planet #WASP121b
https://www.scinexx.de/news/kosmos/extrasolarer-gasriese-hat-dreistoeckige-winde/

Extrasolarer Gasriese hat dreistöckige Winde. Erste 3D-Kartierung einer Exoplaneten-Gashülle enthüllt einzigartiges Wettermuster. #Exoplanet #Gasriese #Atmosphaere #Astronomie #Planet #WASP121b
https://www.scinexx.de/news/kosmos/extrasolarer-gasriese-hat-dreistoeckige-winde/

Extrasolarer Gasriese hat dreistöckige Winde. Erste 3D-Kartierung einer Exoplaneten-Gashülle enthüllt einzigartiges Wettermuster. #Exoplanet #Gasriese #Atmosphaere #Astronomie #Planet #WASP121b
https://www.scinexx.de/news/kosmos/extrasolarer-gasriese-hat-dreistoeckige-winde/

Extrasolarer Gasriese hat dreistöckige Winde. Erste 3D-Kartierung einer Exoplaneten-Gashülle enthüllt einzigartiges Wettermuster. #Exoplanet #Gasriese #Atmosphaere #Astronomie #Planet #WASP121b
https://www.scinexx.de/news/kosmos/extrasolarer-gasriese-hat-dreistoeckige-winde/

Die Autorin erzählt unterhaltsam, wie sie mit der Suche nach fremdem Leben eine erfolgreiche Astrophysikerin wurde. Ihr Buch hätte aber von mehr Sorgfalt profitiert. Eine Rezension

Die Astrophysikerin Lisa Kaltenegger beschreibt ihren Werdegang und berichtet von ihrer Forschung. Ein unterhaltsames Buch – mit Ungenauigkeiten. Eine Rezension (Rezension zu Alien Earths von Lisa Kaltenegger)#Astrophysik #Astronomie #Universum #Weltraum #Weltall #All #Physik #Biosphäre #Astrobiologie #außerirdisch #extraterrestrisch #Sonne #Planet #Exoplanet #Alien #JamesWebbTeleskop #Raumfahrt #Kosmologie #CarlSagan #HaraldLesch #StephenHawking #NeildeGrasseTyson #Kopernikus #Supernova #Milchstraße
»Alien Earths«: An der Schwelle zu neuem Leben

In https://www.youtube.com/watch?v=7RyDhIrwOHM a new interview with the student who in May won a big prize for #ExoScout, an #exoplanet detection system comprising a new phase folding algorithm with a #GraphicsProcessingUnit and a #ConvolutionalNeuralNetwork - CNN; https://en.wikipedia.org/wiki/Convolutional_neural_network - detector that already found three unknown ultra-short-period (USP) planets in #Kepler data: see https://projectboard.world/isef/project/phys056-ultra-short-period-planets-discovered-by-exoscout for many details and more in https://www.snexplores.org/article/2023-regeneron-isef-winners-exoplanets-mpox-insect-pests-suicide-prevention and https://www.societyforscience.org/press-release/high-schoolers-win-nearly-9-million-at-regeneron-isef-2023/ and https://www.youtube.com/watch?v=68LqXLRD-WU

ESA's Gaia finds exoplanet with nuclear fusion reaction at its core

An international team of scientists led by Professor Sasha Hinkley at the University of Exeter in England used data from the European Space Agency's Gaia spacecraft to discover an exoplanet, HD 206893 c.

Analysis of the data revealed that the planet wa...

#Exoplanet #Gaia #EuropeanSpaceAgency #HD206893c #NuclearFusion #SustainingLife #GoodNews #Weltverbesserer #WorldImprover #DoGood #SocialCologne

https://interestingengineering.com/science/exoplanet-with-nuclear-fusion-reaction