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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

Rapidly rotating magnetic star HR 5907 emits unusual low-frequency radio signals
icon23. 1. 2025
iconÉtoiles | Étoiles massives de la séquence principale
Image: Rapidly rotating magnetic star HR 5907 emits unusual low-frequency radio signals
Its circular polarization suggests persistent auroral activity via electron cyclotron maser emission...
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Three extremely metal-poor RR Lyrae stars were analyzed using high-resolution spectra
icon14. 1. 2025
iconÉtoile
Image: Three extremely metal-poor RR Lyrae stars were analyzed using high-resolution spectra
Their movement suggests mixed origins - in galactic disk and halo....
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A disintegrating rocky planet discovered orbiting a bright K-dwarf BD+05 4868 A
icon10. 1. 2025
iconÉtoiles | Exoplanète
Image: A disintegrating rocky planet discovered orbiting a bright K-dwarf BD+05 4868 A
When transiting in front of the star, comet-like tails both leading and trailing are visible, indicating large dust grains and rapid mass loss...
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Discovery of TOI 6038 A b - a dense sub-Saturn in the transition between the Neptunian ridge and savanna
icon7. 1. 2025
iconÉtoiles | TESS | Exoplanète
Image: Discovery of TOI 6038 A b - a dense sub-Saturn in the transition between the Neptunian ridge and savanna
Its high-density core suggests tidal or disk migration to its current orbit....
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JWST observations of the disk around CX Tauri reveal unexpectedly bright CO₂ emission that dominates over H₂O
icon18. 12. 2024
iconÉtoiles | Télescope spatial James Webb
Image: JWST observations of the disk around CX Tauri reveal unexpectedly bright CO₂ emission that dominates over H₂O
This may mean that CO₂-rich gas is replacing previously accreted H₂O-rich material, influenced by low accretion luminosity....
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Simulations of TRAPPIST-1 e, f, and g reveal how CO2 and H2O shape atmospheres during magma ocean stages
icon16. 12. 2024
iconÉtoiles | Exoplanètes | Atmosphères planétaires | Naines rouges | Planètes de lave
Image: Simulations of TRAPPIST-1 e, f, and g reveal how CO2 and H2O shape atmospheres during magma ocean stages
CO2 slows water loss and extends mantle solidification, affecting habitability. TRAPPIST-1 e may end with a thick CO2 layer or desiccate like inner planets....
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Two Earth-sized planets and a similar-sized candidate found to orbit a nearby star HD 101581
icon13. 12. 2024
iconÉtoile
Image: Two Earth-sized planets and a similar-sized candidate found to orbit a nearby star HD 101581
The two inner planets orbit near a 4:3 resonance....
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The OrCAS survey targets 26 sub-Neptune systems to refine their masses, radii, and densities
icon27. 11. 2024
iconÉtoiles | Exoplanète
Image: The OrCAS survey targets 26 sub-Neptune systems to refine their masses, radii, and densities
Aiming to uncover their atmospheric compositions and formation histories....
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JWST observations of the nearby cool Y-dwarf WISE 0855-0714 reveal deuterated methane
icon25. 11. 2024
iconÉtoiles | Naines brunes | Objets stellaires jeune
Image: JWST observations of the nearby cool Y-dwarf WISE 0855-0714 reveal deuterated methane
Phosphine was also detected at a part-per-billion level, hinting at complex chemistry....
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A powerful stellar prominence eruption was observed on red dwarf LAMOST J0444+2356
icon19. 11. 2024
iconÉtoile
Image: A powerful stellar prominence eruption was observed on red dwarf LAMOST J0444+2356
The prominence mass is the highest recorded for any star relative to its size....
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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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