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

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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

New Henrietta Spectrograph to Probe Alien Atmospheres Finding life beyond our solar system goes beyond measuring an exoplanet’s size, as rocky, Earth-sized worlds might not have the conditions for life as we know it. While exoplanets can be directly imaged by blocking their star’s glare, these images are fuzzy and lack resolution to provide enough details about the habitability. Therefore, astronomers are limited to studying an exoplanet’s atmosphere, and this has proven to be quite beneficial in teaching scientists about an exoplanet’s formation and evolution, and whether it contains the necessary ingredients for life as we know it.

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Exomoons Could Be Habitable for Billions of Years, Provided they have Hydrogen Atmospheres www.universetoday.com/articles/exomoons-could-... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space […]

Mars-Like Worlds Near M-Dwarfs May Lose Air in Millions of Years The criteria for finding an Earth-like planet unofficially comes down to two things: water and the habitable zone. But a phenomenon known as atmospheric escape often “escapes” the minds of many astronomy fans, and it turns out that atmospheric escape is one of the key characteristics for finding an Earth-like world. Although extensive research has been conducted on how the planet Mars might have lost its atmosphere, and potentially the ability to sustain life, how would the atmosphere enveloping a Mars-like exoplanet respond to stars different from our own?

Mars-Like Worlds Near M-Dwarfs May Lose Air in Millions of Years www.universetoday.com/articles/mars-like-world... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

Direct confirmation of two baby planets forming around a young, sun-like star As the number of exoplanet detections has breached 6,000 and continues to grow, scientists are finding a wide variety of different solar system architectures. Critical to understanding how these architectures take shape is finding young planets forming around very young stars. In 2025, a team of astronomers announced the discovery of a planet about five times more massive than Jupiter around a star that's very much a younger version of our sun.

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AI approach uncovers dozens of hidden planets in NASA's TESS data Astronomers at the University of Warwick have validated over 100 exoplanets, including 31 newly detected planets, using a new artificial intelligence tool applied to data from NASA's Transiting Exoplanet Survey Satellite (TESS), a space mission that monitors the sky for the subtle dimming of starlight caused when planets pass in front of their host stars.

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Moons orbiting wandering exoplanets could be habitable—with one catch Provided they host thick, hydrogen-dominated atmospheres, moons orbiting free-floating exoplanets could retain much of the heat generated deep within their interiors by tidal forces. Led by David Dahlbüdding at the Max Planck Institute for Extraterrestrial Physics and Giulia Roccetti at the European Space Agency, a new study predicts that hydrogen could act as a potent greenhouse gas—potentially providing habitable conditions for billions of years after their host planets are first ejected from their stellar systems. The work has been published in Monthly Notices of the Royal Astronomical Society.

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What 'Project Hail Mary' gets right—and wrong—about astrophysics "Project Hail Mary," the Ryan Gosling-led adaptation of the best-selling sci-fi novel from Andy Weir, is being praised for putting the science in science fiction. Although aliens, sun-draining microorganisms and galaxy-spanning spaceflight are all a part of the story of a scientist sent on a suicide mission to save Earth, the film and its source material are not afraid to delve into the kind of astrophysics that would make most people's heads spin.

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The best places to look for alien life: Scientists identify 45 Earth-like worlds to explore for a 'Project Hail Mary' If we're to find extraterrestrial life in the universe, astronomers have pinpointed the best places to look for it. They have identified just under 50 rocky worlds most likely to be habitable out of the more than 6,000 exoplanets discovered so far.

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New study complicates the search for alien oxygen Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance because it is produced by biological synthesis. But that might not be the case on other planets, so even if we do find a very clear high oxygen signal in the atmosphere of an exoplanet, it might not be a clear indication that life exists there. A new paper, available in pre-print on arXiv, by Margaret Turcotte Seavey and a team of researchers from institutions like the NASA Goddard Space Flight Center and Johns Hopkins University, adds some additional context to what else might be going on in those atmospheres. In particular, they note that if there's even a little bit of water vapor, it can make a big difference in whether a lifeless rock looks like a living, thriving world.

New study complicates the search for alien oxygen phys.org/news/2026-03-complicates... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

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Astronomers discover a new type of planet that probably smells like rotten eggs www.space.com/astronomy/exoplanets/ast... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science […]

Origin of lowest density super-puff planet remains a hazy mystery A thick layer of haze around the ultra-low-density planet Kepler-51d likely obscures not only the strange planet's composition, but also its origin, according to a new study. A team led by Penn State researchers used NASA's James Webb Space Telescope (JWST) to take a deeper look at the "super-puff" planet that defies planetary formation models. However, the thickest layer of haze found on a planet yet makes discerning the chemical elements in the planet's atmosphere—and any clues to the planet's formation—challenging.

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A new class of molten planet stores abundant sulfur in a perpetual magma ocean A study led by the University of Oxford has identified a new type of planet beyond our solar system—one that stores large amounts of sulfur deep within a permanent ocean of magma. The findings have been published in Nature Astronomy.

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Life, But Not As We Know It For sixty years, the search for life beyond Earth has been built on the single assumption that alien life will look enough like us to recognise. A radical new idea called Assembly Theory is challenging that assumption. A team from the Arizona State University has proposed applying it to the atmospheres of distant exoplanets, not to look for specific gases, but to measure how much complexity a planetary atmosphere contains, and whether blind chemistry alone could plausibly have produced it. If it works, it could transform the way humanity searches for life among the stars, and redefine what we are even searching for.

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This Isn't Just Another Rocky World Orbiting a Red Dwarf. This One's Special Rocky planets are found in abundance around M-type stars (red dwarfs), so finding another one doesn't always generate headlines. But an international team of astronomers say that one recent M-dwarf rocky planet found by TESS is especially noteworthy. This one can serve as a benchmark for comparative studies of this type of exoplanet and their at-risk atmospheres.

This Isn't Just Another Rocky World Orbiting a Red Dwarf. This One's Special www.universetoday.com/articles/this-isnt-just-... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology

NASA's tiny spacecraft sends first exoplanet images With the first images from the spacecraft now in hand, the team behind NASA's Star-Planet Activity Research CubeSat, or SPARCS, is ready to begin charting the energetic lives of the galaxy's most common stars to help answer one of humanity's most profound questions: Which distant worlds beyond our solar system might be habitable?

NASA's tiny spacecraft sends first exoplanet images phys.org/news/2026-03-nasa-tiny-s... 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology