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#exoplanets

5 posts4 participants0 posts today
Public
michael

2-Jul-2025
Clingy planets can trigger own doom, suspect #Cheops and #TESS

"planet with a death wish" seems to be triggering flares of radiation from the star it orbits. These tremendous explosions are blasting away the planet’s wispy atmosphere, causing it to shrink every year.
Though it was theorised to be possible since the 90s, the flares seen in this research are around 100 times more energetic than expected.
eurekalert.org/news-releases/1
#science #exoplanets #astrobiology

EurekAlert!Clingy planets can trigger own doom, suspect Cheops and TESSAstronomers using the European Space Agency’s Cheops mission have caught an exoplanet that seems to be triggering flares of radiation from the star it orbits. These tremendous explosions are blasting away the planet’s wispy atmosphere, causing it to shrink every year. This is the first-ever evidence for a ‘planet with a death wish’. Though it was theorised to be possible since the nineties, the flares seen in this research are around 100 times more energetic than expected.
Public
Mikko Tuomi

Astronomers have caught an #exoplanet that seems to be triggering flares of radiation from the #star it orbits.

These tremendous explosions are blasting away the #planet's wispy #atmosphere, causing it to shrink every year.

This is the first-ever evidence of a "planet with a death wish."

Though it was theorized to be possible since the nineties, the flares seen in this research are around 100 times more energetic than expected.

#astronomy #exoplanets
phys.org/news/2025-07-clingy-p

Paper by Ilin et al. (2205):
nature.com/articles/s41586-025

Phys.org · Clingy planets can trigger their own doom, Cheops and TESS suggestBy European Space Agency
Public
Soh Kam Yung

"The innermost of these two planets, a Jupiter-size gas giant called HIP 67522 b, orbits HIP 67522 at a distance of less than 12 times the star’s radius [...] This in-your-face proximity, combined with HIP 67522’s volatile teenage nature, has created a spectacle astronomers have never seen before: a planet that triggers powerful flares on the surface of its host star, leading to the planet’s own slow destruction."

scientificamerican.com/article

In this artist’s impression, we see the planet HIP 67522 b sending a wave of energy down the magnetic field lines toward the surface of its host star, which it is closely orbiting. When the wave meets the end of the magnetic field line at the star’s surface, it triggers a massive flare
Scientific American · Astronomers Found the Most Self-Destructive Planet in the SkyBy Jacek Krywko
#Astronomy#Space#Stars
Continued thread
Public
Knowledge Zone

#Exoplanets showcase an astonishing diversity far beyond what's seen in our own solar system, including "hot Jupiters" orbiting incredibly close to their stars and "super-Earths" that are rocky but significantly larger than our home planet.

Many exoplanets also exist in systems where planets are tightly packed or have highly eccentric orbits, defying our previous assumptions about planetary system architectures.

knowledgezone.co.in/trends/exp

Public *
Lukas VFN 🇪🇺

Desert #Lichens Offer New Evidence for the Possibility of Life on Other Planets spacebotany.uk/blog/desert-lic @OrbitalGardens

UVC-Intense #Exoplanets May Not Be Uninhabitable liebertpub.com/doi/10.1089/ast

"The discovery that #lichen has evolved this protective layer to UVC radiation was surprising because it isn’t necessary for their survival. Earth’s atmosphere was already filtering out UVC rays by the time lichen appeared, so the protection is a mere bonus thanks to their remarkable UVA & B protection"

close-up photo of a brown crust of lichen growing on a dry rock
Public
Mikko Tuomi

Studies from recent years have reached different conclusions regarding how frequently super-Earths are accompanied by long period giant #planets and vice versa.

This relation has been predicted to be mass dependent by #planet formation models.

Accordingto a new paper, cold Jupiters are six times more massive when not in company of an inner super-Earth, while super-Earths are not significantly more massive while in company of an outer giant planet.

There is also an occurrence enhancement for Saturn-mass planets while in presence of a super-Earth by a factor of 4, and for super-Earths in presence of Saturns by the same factor.

This positive correlation disappears for super-Jupiters.

#astronomy #exoplanets
astrobiology.com/2025/06/satur

Astrobiology · Saturns, But Not Super-Jupiters, Occur More Frequently In The Presence Of Inner Super-Earths - AstrobiologyStudies from recent years have reached different conclusions regarding how frequently super-Earths are
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