Astronomers Just Found a “Forbidden” Giant Planet Orbiting a Tiny Star, and Its Atmosphere Is Rewriting Planet Formation Theories Astronomers discovered a "forbidden" giant planet, TOI-5205 b, orbiting a small star. Its atmosphere...

Astronomers discovered a "forbidden" giant planet, TOI-5205 b, orbiting a small star. Its atmosphere lacks heavy elements, challenging planet formation theories. #exoplanet #exoplanet #News

[News] 🪐 Découverte d'une "planète fondue" - la première du genre - Techno-Science.net

Une exoplanète en fusion complète détectée par James Webb : L 98‑59 d secoue nos idées sur les mondes possibles
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#Space #Science #Innovation #Astrophysics #Exoplanet #JWST #L9859d #MoltenWorld

Une exoplanète en fusion complète détectée par James Webb : L 98‑59 d secoue nos idées sur les mondes possibles
www.techno-science.net/forum/viewtopic.php
#Space #Science #Innovation #Astrophysics #Exoplanet #JWST #L9859d #MoltenWorld

À 92 années-lumière, la NASA repère une exoplanète comme la Terre mais où il fait 250°C à la surface Découvrez TOI-4616 b, exoplanète rocheuse proche d’une naine rouge, repérée par le satellite TESS dans notre voisinage galactique.

La NASA trouve une “Terre” à 92 al… mais 250°C. Habitable ? Nope. Kepler relance le débat
www.science-et-vie.com/ciel-et-espa...
#Space #Science #Innovation #Astrophysics #Exoplanet #NASA #Kepler

Original post on mastodon.social

La NASA trouve une “Terre” à 92 al… mais 250°C. Habitable ? Nope. Kepler relance le débat
www.science-et-vie.com/ciel-et-espace/a-92-anne...
#Space #Science #Innovation #Astrophysics […]

A Pair Of Planet-forming Disks - Astrobiology This month’s ESA/Webb Picture of the Month offers us a two-for-one on brand new stars — with some potential planets thrown in as well

A Pair Of Planet-forming Disks
astrobiology.com/2026/04/a-pa... #astrobiology #exoplanet #astronomy

Hot Rocks Survey V: Secondary Eclipse Photometry of GJ 3473 b with JWST/MIRI - Astrobiology JWST is transforming our ability to characterise small exoplanets

Hot Rocks Survey V: Secondary Eclipse Photometry of GJ 3473 b with JWST/MIRI
astrobiology.com/2026/04/hot-... #astrobiology #exoplanet #astronomy

Examples: Even/Odd Transit Check
👨‍💻👨‍💻👨‍💻

#astronomy #astronomer #astronomers #Astrophysics #astrophysicist #TESS #Python #exoplanet #Claude

What is the Even/Odd Transit Check?
Claude answers…
👨‍💻👨‍💻👨‍💻

#astronomy #astronomer #astronomers #Astrophysics #astrophysicist #TESS #Python #exoplanet #Claude

Giant 'forbidden planet' orbiting small star shows an unusually low-metal atmosphere Scientists have discovered that a highly unusual giant planet—sometimes called "forbidden"—could have an atmosphere with fewer heavier elements than its host star. University of Birmingham astrophysicist Dr. Anjali Piette worked with an international research team to analyze James Webb Space Telescope data from the exoplanet TOI-5205 b. This is a Jupiter-sized planet orbiting a star about four times the size of Jupiter and about 40% the mass of the sun.

Giant 'forbidden planet' orbiting small star shows an unusually low-metal atmosphere phys.org/news/2026-04-giant-forbi... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Resistive MHD Simulations of Stellar Wind-Magnetosphere Coupling in TRAPPIST-1e - Astrobiology Close-in terrestrial exoplanets around M dwarfs reside in dense

Resistive MHD Simulations of Stellar Wind-Magnetosphere Coupling in TRAPPIST-1e
astrobiology.com/2026/04/resi... #astrobiology #exoplanet #spacweather

Pre-proposal Workshop for HWO Instrument Concept Studies Solicitation - Astrobiology U.S.-led Habitable Worlds Observatory (HWO) instrument concept studies

Pre-proposal Workshop for HWO Instrument Concept Studies Solicitation
astrobiology.com/2026/04/pre-... #astrobiology #astronomy #exoplanet

World in Crimson, Digital artwork, 2022
#art #digitalart #planet #planetart #crimson #red #space #voyager #exoplanet #scifi #scifiart #sciencefiction #outerspace #cosmos #spacetravel

Gemini South confirms long-suspected link between the composition of exoplanets and their host stars Astronomers have discovered that a giant planet, WASP-189b, echoes the composition of its host star, providing the first direct evidence of a foundational concept in astrobiology. This discovery was achieved through the first-ever simultaneous measurement of gaseous magnesium and silicon in a planet's atmosphere. The team used the Gemini South telescope, one half of the International Gemini Observatory. The findings are published in the journal Nature Communications.

Gemini South confirms long-suspected link between the composition of exoplanets and their host stars phys.org/news/2026-04-gemini-sout... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Gemini South Confirms Long-Suspected Link Between the Composition of Exoplanets and Their Host Stars Almost 320 light-years away in the Libra constellation lies WASP-189b, an exoplanet known as an ultra-hot Jupiter (UHJ). UHJs have temperatures high enough to vaporize rock-forming elements like magnesium (Mg), silicon (Si), and iron (Fe), offering a rare opportunity to see these elements using spectroscopy — the technique of breaking up light into its component wavelengths to identify the presence of chemicals. An international team of astronomers led by Jorge Antonio Sanchez, a graduate student at Arizona State University (ASU) observed WASP-189b using the high-resolution Immersion GRating INfrared Spectrograph (IGRINS) when it was mounted on the Gemini South telescope in Chile [1]. This powerful instrument allowed them to simultaneously measure the magnesium and silicon content of the exoplanet’s atmosphere. This is the first time such a measurement has been made, and the data reveal that WASP-189b shares the same magnesium-to-silicon ratio as its host star. This finding provides the first observational evidence of a widely adopted assumption about planet formation, and opens a new route to understand how exoplanets form and evolve. “These discoveries show Gemini's ability to help us understand the characteristics of the remarkable zoo of exoplanets in our solar neighborhood,” says Chris Davis, NSF Program Director for...

Gemini South Confirms Long-Suspected Link Between the Composition of Exoplanets and Their Host Stars
->Newswise | More on "Exoplanet composition mirrors host stars" at BigEarthData.ai | #Exoplanet

Original post on scitechdaily.com

Astronomers Discover Strange “Inside-Out” Planetary System That Defies Cosmic Rules A newly studied planetary system appears to break the expected order of worlds, revealing an unusual arrangem...

#Space #Astronomy #CHEOPS #European #Space #Agency […]

[Original post on scitechdaily.com]

Original post on sci.news

Ultra-Hot Jupiter WASP-189b Mirrors Its Star’s Chemistry, Astronomers Find Using the Immersion Grating Infrared Spectrometer (IGRINS) on the Gemini South telescope at the International Gemini Obs...

#Astronomy #Atmosphere #Carbon #monoxide #Exoplanet #Gas #giant […]

[Original post on sci.news]

Original post on sci.news

Ultra-Hot Jupiter WASP-189b Mirrors Its Star’s Chemistry, Astronomers Find Using the Immersion Grating Infrared Spectrometer (IGRINS) on the Gemini South telescope at the International Gemini Obs...

#Astronomy #Atmosphere #Carbon #monoxide #Exoplanet #Gas #giant […]

[Original post on sci.news]

Scouring TESS Data With AI Reveals A Hundred New Exoplanets Artificial Intelligence (AI) and Machine Learning (ML) are making a growing contribution to astronomy. As powerful telescopes and large automated surveys become more commonplace, the vast quantities of data they generate demand equally powerful diagnostic tools. The Vera Rubin Observatory and its enormous data-generating capacity drive the point home. The observatory's Legacy Survey of Time and Space generates up to 20 terabytes of data each night, and that data is processed at a dedicated facility. The Rubin Observatory is the current queen of data generation, but exoplanet hunting missions like Kepler and TESS generate their own data that needs analysis. Scientists are still processing it, and as time goes on, they're making more and better use of AI and ML to "mine" that data for unrevealed exoplanets. One group of scientists have developed a ML tool aimed solely at TESS. It's called RAVEN, which stands for RAnking and Validation of ExoplaNets. The scientists who developed it describe RAVEN as "a newly developed vetting and validation pipeline for TESS exoplanet candidates." In newly published research, a team of exoplanet researches used RAVEN to focus on TESS transit data for more than 2 million stars. It's titled "Automatic search for transiting planets...

Scouring TESS Data With AI Reveals A Hundred New Exoplanets
->Universe Today | More on "AI discovering exoplanets with TESS" at BigEarthData.ai | #Exoplanet #AI #Data

Dust Evolution During Protoplanetary Disk Bbuildup Enhances CO Ice Relative To Water - Astrobiology Water ice is expected to be the dominant volatile component of bodies formed in the outer Solar System

Dust Evolution During Protoplanetary Disk Bbuildup Enhances CO Ice Relative To Water
astrobiology.com/2026/04/dust... #astrobiology #exoplanet #astrochemistry

A Break In Planet Occurrence Near The Pebble Isolation Mass Should Be Observable By The Roman Microlensing Survey - Astrobiology Microlensing detections are uniquely well-suited to probing the population of planets outside the water iceline, down to planetary masses comparable to the Earth

A Break In Planet Occurrence Near The Pebble Isolation Mass Should Be Observable By The Roman Microlensing Survey
astrobiology.com/2026/04/a-br... #astrobiology #exoplanet

Weighing The Mass Of LHS 3844 b - Astrobiology LHS 3844 b (TOI-136 b) is a ultra short-period, Earth-size exoplanet detected by TESS

Weighing The Mass Of LHS 3844 b
astrobiology.com/2026/04/weig... #astrobiology #exoplanet

Agentic Science Toolkit for Exoplanet Research - Astrobiology The expansion of exoplanet observations has created a need for flexible, accessible, and user-friendly workflows

Agentic Science Toolkit for Exoplanet Research
astrobiology.com/2026/04/agen... #astrobiology #exoplanet

Closeby Habitable Exoplanet Survey (CHES). V. Planetary Parameters Derived from Angular Separation Variations - Astrobiology The Closeby Habitable Exoplanet Survey (CHES)

Closeby Habitable Exoplanet Survey (CHES). V. Planetary Parameters Derived from Angular Separation Variations
astrobiology.com/2026/04/clos... #astrobiology #exoplanet #astrochemistry

AI Approach Uncovers Dozens Of Hidden Planets In NASA’s TESS Data - Astrobiology Astronomers at the University of Warwick have validated over 100 exoplanets

AI Approach Uncovers Dozens Of Hidden Planets In NASA’s TESS Data
astrobiology.com/2026/03/ai-a... #astrobiology #exoplanet #astronomy #AI

Flare-driven Habitability: Expanding Life's Potential Around Low-mass Stars - Astrobiology The traditional definition of the circumstellar habitable zone focuses on liquid water, but neglects the crucial role of ultraviolet radiation in prebiotic chemistry.

Flare-driven Habitability: Expanding Life's Potential Around Low-mass Stars
astrobiology.com/2026/03/flar... #astrobiology #exoplanet

Identifying Surface Degeneracies in Single-Visit Reflected Light Observations of Modern Earth using the Habitable Worlds Observatory - Astrobiology Characterizing the surface and atmosphere of Earth-like planets in reflected light is a key goal for upcoming direct imaging surveys.

Identifying Surface Degeneracies in Single-Visit Reflected Light Observations of Modern Earth using the Habitable Worlds Observatory
astrobiology.com/2026/03/iden... #astrobiology #exoplanet #astronomy #oceanworld

Interaction Between Vegetation And Snowball Phases In The Late Proterozoic Earth - Astrobiology Between 2.4 and 0.6 Gy ago, our planet underwent several episodes of global glaciations, including the Snowball Earth

Interaction Between Vegetation And Snowball Phases In The Late Proterozoic Earth
astrobiology.com/2026/03/inte... #astrobiology #exoplanet #astrogeology #oceanworld

Awakari App

Scientists Propose a Radical New Method To Find Alien Life Assembly Theory shifts the search for life from identifying specific molecules to measuring chemical complexity, offering a more universal...

#Space #Astrobiology #Astronomy #Exoplanet #NASA

Origin | Interest | Match

How plants could betray themselves across the galaxy Here's a thought experiment. Imagine looking at Earth from a distant star system, armed with a powerful telescope capable of capturing its reflected light. Could you tell the planet was alive? The answer, remarkably, might be yes and the clue would come from the color of the plants.

How plants could betray themselves across the galaxy https://phys.org/news/2026-03-betray-galaxy.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology