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Stellar Brief: 20. 10. 2026
Today’s standout finding changes the story of PDS 70: the young star is estimated to be 12 to 16 million years old, about three times older than previously thought. Alpha Centauri was the leading Stellarcatalog search query, with 1,537 impressions on October 19. Read today's Stellar Brief

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Latest astronomy nouvelles

Astronomers identified two remarkably low-density, inflated planets TOI-1927 b and TOI-2643 b
icon22. 12. 2025
iconÉtoiles | Exoplanète
Image: Astronomers identified two remarkably low-density, inflated planets TOI-1927 b and TOI-2643 b
TOI-1927 b and TOI-2643 b are the first puffy planets known to orbit stars in thick disc of the Milky Way. This is highly unexpected in such metal-poor environment of our galaxy....
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5 new Earth-sized exoplanets discovered orbiting small red dwarfs
icon16. 12. 2025
iconÉtoiles | Exoplanètes | Super-Terre | Naines rouge
Image: 5 new Earth-sized exoplanets discovered orbiting small red dwarfs
These planets could be great targets for study of atmosphere loss on exoplanets close to their active stars....
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Hot Jupiter WASP-189 b shows a strong dayside glow but almost no nightside light
icon8. 12. 2025
iconÉtoiles | Exoplanètes | TESS | Jupiter chaud
Image: Hot Jupiter WASP-189 b shows a strong dayside glow but almost no nightside light
TESS phase curve reveals extreme heat with poor redistribution. The planet orbits in a near-polar orbit around its rapidly rotating star...
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JWST detected phosphine in the atmosphere of cool brown dwarf Wolf 1130 C
icon9. 10. 2025
iconÉtoiles | Atmosphères planétaires | Exoplanète
Image: JWST detected phosphine in the atmosphere of cool brown dwarf Wolf 1130 C
The phosphine is detected in far higher quantities than in other brown dwarfs. The result matches disequilibrium chemistry seen in Jupiter and Saturn. The brown dwarf orbits white dwarf - red dwarf binary....
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TOI-4507 b is a rare cold super-puff planet: a sub-Saturn with a low density on a 105-day polar orbit
icon3. 10. 2025
iconÉtoiles | Exoplanète
Image: TOI-4507 b is a rare cold super-puff planet: a sub-Saturn with a low density on a 105-day polar orbit
At just 700 Myr old, it’s one of the youngest and longest-period super-puffy planets with measured stellar obliquity....
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New observations reveal HD 28471 hosts three compact planets (3.7–5.7 Earth masses) on near-resonant orbits of 3–12 days
icon26. 8. 2025
iconÉtoile
Image: New observations reveal HD 28471 hosts three compact planets (3.7–5.7 Earth masses) on near-resonant orbits of 3–12 days
Also a possible giant planet may exist farther from the star...
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Low density of exoplanet L 98-59 d points to a volatile-rich magma ocean planet
icon5. 7. 2025
iconÉtoiles | Exoplanète
Image: Low density of exoplanet L 98-59 d points to a volatile-rich magma ocean planet
Super-Earth L 98-59 d may be neither a gas dwarf nor a water world—its low density points to a volatile-rich magma ocean planet with an SO₂-H₂ atmosphere....
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Signals where transits and star spots cross each other reveal misaligned orbit of exoplanet TOI-3884 b.
icon16. 6. 2025
iconÉtoiles | Exoplanète
Image: Signals where transits and star spots cross each other reveal misaligned orbit of exoplanet TOI-3884 b.
This Neptune-mass planet orbits a tilted red dwarf with a long-lived polar starspot, persisting for at least 7 years....
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Hot, rocky exoplanet Gliese 357 b shows no strong atmospheric features yet
icon2. 6. 2025
iconÉtoiles | Exoplanètes | Télescope spatial James Webb
Image: Hot, rocky exoplanet Gliese 357 b shows no strong atmospheric features yet
High escape velocity + low stellar activity however hint it may retain a secondary atmosphere. Further observation might show more....
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A 3-5 Jupiter-mass candidate planet spotted 730 AU from a young binary star 2MASS J1006-6352
icon20. 5. 2025
iconÉtoiles | Exoplanète
Image: A 3-5 Jupiter-mass candidate planet spotted 730 AU from a young binary star 2MASS J1006-6352
If confirmed, its wide orbit defies core accretion theory, it could reshape how we think gas giants form....
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Exoplanètes nouvellement découvertes

 EK Chamaeleontis b 10 / 2026 2702.2 M⊕ 321.3 ly
HD 715 b 10 / 2026 201.9 M⊕ 542.8 ly
DENIS J1253-5709 b 10 / 2026 244.8 M⊕ 54.4 ly
TOI-6417 b 09 / 2026 349.7 M⊕ 1903.9 ly
TOI-6443 b 09 / 2026 1605.4 M⊕ 2051.6 ly
TOI-7219 b 09 / 2026 661 M⊕ 1074.2 ly
TOI-4079 B b 09 / 2026 1646.8 M⊕ 1185.6 ly
HD 45652 b 09 / 2026 1557.7 M⊕ 113.9 ly
LSPM J0804+1116 b 09 / 2026 6.4 M⊕ 82.6 ly
HR 8799 f 09 / 2026 524.5 M⊕ 133.3 ly
61 Cygni A b 09 / 2026 2543.3 M⊕ 11.4 ly
TOI-5646 b 08 / 2026 45.9 M⊕ 1352.3 ly
TOI-4468 c 08 / 2026 11.1 M⊕ 1233.1 ly
TOI-4468 b 08 / 2026 170.1 M⊕ 1233.1 ly
TOI-4468 d 08 / 2026 311 M⊕ 1233.1 ly
Newly discovered exoplanets
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Latest scientific studies

Parcourez les dernières études scientifiques sur les étoiles et les exoplanètes de notre galaxie. Découvrez les dernières recherches en astrophysique et en astronomie stellaire.

 PDS 70
370 ly
 study icon Kinematic structure and age of a Scorpius--Centaurus subcomponent: implications for PDS 70 planetary system
yesterday

TIC 402710280
218 ly
 study icon A 36.34-day Sub-Neptune Candidate Transiting the Nearby K Dwarf TIC 402710280
yesterday

LTT 9779
264 ly
 +1 study icon Granulation in Color: The Chromatic Stellar Flicker of LTT-9779 and WASP-121
yesterday

HD 112485
5881 ly
 study icon Ensemble pulsational characteristics of eclipsing binaries containing β Cep stars observed by the TESS mission
19. 10. 2026

HD 100546
359 ly
 study icon An ALMA view on molecular complexity: water, methanol, and methyl formate in the HD 100546 and IRS 48 disks
19. 10. 2026

HD 120678
5829 ly
 study icon HD 120678: a classical Be star with a tilting heartbeat disk
18. 10. 2026

33 G. Librae
19.2 ly
 +1 study icon EPRV Asteroseismology of the K dwarfs GJ 570 A and GJ 783 A with ESPRESSO. Empirical mode-amplitude scaling in tension with 3D convection simulations
18. 10. 2026

WISE 0855-0714
7.3 ly
 study icon Water Cloud and Chemical Modulations in the Coldest Brown Dwarf
17. 10. 2026

TOI-5322
1560 ly
 +1 study icon A Sample of Thick-Disk Stars Hosting Hot Jupiters
17. 10. 2026

WD J1330+6435
282 ly
 study icon Any colour you like: the diverse chromaticities of white dwarfs
17. 10. 2026
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