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
‘I’ve seen the devil’: Brazil’s UFO capital marks 30 years since ‘alien encounter’

Sightings in Varginha in 1996 have been dismissed as hoax, but saga continues to draw people from around world

The Guardian
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.

"7 Theories That Prove Aliens Might Actually Be Real"

Ein "Unbekanntes Flugobjekt", das von 25.000 Meter (80.000 Feet) auf 15 Meter (50 Feet) über einer Wasseroberfläche absinkt - innerhalb einer Sekunde!

Fliehkräfte von berechneten 5.000 G!
Kein sichtbarer Antrieb - was nach allen unseren Erkenntnissen nicht "flugfähig" sein dürfte!

"Mars once had everything life needed"

Vielleicht sind WIR die "Mars-Männchen"?

Interessant!

https://invidious.nerdvpn.de/watch?v=9pu2ErY0y8k

(https://youtu.be/9pu2ErY0y8k)

#AstroMatt #Aliens #AlienLife #UFO #WOWsignal
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
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.

Phys.org
Astronomers discover a new type of planet that probably smells like rotten eggs

"What other types of planets are waiting to be uncovered?"

Space
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.

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.

Phys.org
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.

Universe Today