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.

Phys.org

RE: https://mastodon.social/@pomarede/115860719793606685

"[...] in a **modest neighborhood** called The Solar System [...]", "solar *interstellar neighborhood*", "[...] it's like a huge collected **city** [...]": Mr. Hawking seemed to be well aware it was all our **home**! 🛖 It has been so exciting to join him in the "ultimate voyage" which is his *Genius* documentary...! I recommend it if you want to get a bit more familiar with your cosmic neighborhood! 🌌 🗺️ ✨
#Laniakea #Astronomy #StephenHawking #Milkyway #LaniakeaSupercluster #Solarsystem #Earth

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.

Treffen in den Grachten: Damit sind es fünf | ACSOLAR #035

https://makertube.net/w/3tgioetnhnuyLwB7h85aBa

Treffen in den Grachten: Damit sind es fünf | ACSOLAR #035

PeerTube

The 45 planets most likely to host alien life, according to astronomers

https://fed.brid.gy/r/https://www.popsci.com/science/habitable-planets-astronomers-project-hail-mary/

The best places to look for alien life: Scientists identify 45 Earth-like worlds to explore for a 'Project Hail Mary' https://phys.org/news/2026-03-alien-life-scientists-earth-worlds.html 🪐 #Exoplanet #Exoplanets #AlienWorlds #AlienLife #Extraterrestrials #Space #Science #SolarSystem #Astrobiology
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.

Phys.org