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Stellar Brief: 21. 10. 2026
Tau Ceti remains a high-interest target for enthusiasts, with new research exploring how volatile substances behave within planetary interiors. Understanding these processes is key to decoding the complex evolution of worlds far beyond our own solar system. Read today's Stellar Brief

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Latest astronomy nouvelles

Discovery of remarkably low density exoplanet TOI 1420 b
icon18. 9. 2023 (accepté)
iconÉtoiles | TESS | Exoplanète
Image: Discovery of remarkably low density exoplanet TOI 1420 b
Astronomers led by Stephanie Yoshida announced discovery of a new super-puff exoplanet. It orbits a Sun-like star TOI 1420 once in every 7 days. With 12 Earth radii and 25 Earth masses it has only 1 % of Earths density....
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Sub-Neptune and super-Earth discovered orbiting a star HIP 113103 150 light years away
icon8. 9. 2023 (accepté)
iconÉtoiles | TESS | CHEOPS | Exoplanète
Image: Sub-Neptune and super-Earth discovered orbiting a star HIP 113103 150 light years away
Average density of the super-Earth HIP 113103 b is very similar to that of Earth, but the planet is 6 times heavier....
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Very Large Telescope reveals a compact multi-planetary system HIP 29442 (TOI 469)
icon25. 8. 2023 (accepté)
iconÉtoiles | Exoplanètes | TESS
Image: Very Large Telescope reveals a compact multi-planetary system HIP 29442 (TOI 469)
Radial velocity measurement shows clear signs of three exoplanets in the system. All bigger than Earth....
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Astronomers observe TU Tauri B - a possible proto-barium giant
icon21. 8. 2023 (accepté)
iconÉtoile
Image: Astronomers observe TU Tauri B - a possible proto-barium giant
The star is part of a binary system almost 4 thousand light years away....
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New super-Earth discovered orbiting a red dwarf TOI 1680 121 light years away
icon11. 7. 2023 (accepté)
iconÉtoiles | TESS | Exoplanète
Image: New super-Earth discovered orbiting a red dwarf TOI 1680 121 light years away
The exoplanet TOI 1680 b is 3 times heavier than Earth and its radius is 47 % bigger....
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Helium confirmed in atmospheres of exoplanets HAT-P-11 b, HD189733 b, and WASP-69 b
icon10. 7. 2023 (accepté)
iconÉtoiles | Exoplanètes | Atmosphères planétaire
Image: Helium confirmed in atmospheres of exoplanets HAT-P-11 b, HD189733 b, and WASP-69 b
Upper limits set for 8 more planets using Canada France Hawaii Telescope....
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icon27. 6. 2023 (accepté)
iconÉtoiles | Exoplanète
Image:
Study of magnetic environment around nearby calm red dwarf....
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Two exoplanets smaller than Neptune discovered around two red dwarfs TOI 2084 and TOI 4184
icon26. 6. 2023 (accepté)
iconÉtoiles | TESS | Exoplanète
Image: Two exoplanets smaller than Neptune discovered around two red dwarfs TOI 2084 and TOI 4184
Both planets have periods shorter than 10 days and are hotter than Earth....
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JWST ruled out thick carbon dioxide atmosphere on potential Venus analog TRAPPIST-1 c
icon16. 6. 2023 (accepté)
iconÉtoiles | Exoplanètes | Télescope spatial James Webb
Image: JWST ruled out thick carbon dioxide atmosphere on potential Venus analog TRAPPIST-1 c
The exoplanet was thought to be similar to Venus. However new observations with James Webb Space telescope ruled out thick atmosphere with dominant carbon dioxide....
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New planet found transiting a Sun-like star TOI 908
icon16. 6. 2023 (accepté)
iconÉtoiles | Exoplanètes | TESS
Image: New planet found transiting a Sun-like star TOI 908
The exoplanet is similar to Neptune and orbiting too close to be habitable....
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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.

 TOI 431
106 ly
 study icon Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey
today

L 115-21
41.9 ly
 study icon A sub-Earth-sized TESS planet candidate in the nearby M-dwarf binary GJ 774, most likely orbiting GJ 774 A (TIC 351339274)
today

TOI-3686
841 ly
 study icon TOI-3686: A Hot Jupiter and Sub-Neptune In A 2:1 Mean-Motion Resonance
today

TOI-270
73.3 ly
 study icon Ammonia-Hydrogen Phase Equilibria in Planetary Envelopes from First-Principles-Based Machine-Learning Molecular Dynamics
today

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
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Publications plus anciennes

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