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29. 10. 2026
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Weighing potentially habitable planets around Sun-like stars remains surprisingly difficult: a methods test found that precise measurements often require planets weighing about 8 to 10 Earth masses. The latest reports also explore brilliant radio bursts from a rapidly spinning brown dwarf, a possible hotspot on another brown dwarf, and how transit changes can expose a planet that never crosses its star.

AU Microscopii has at least two spectral components: a 4000 K ambient photosphere and cool spots that have a temperature of 3000 K
icon25. 10. 2023 (accepted)
iconStars | Exoplane
Image: AU Microscopii has at least two spectral components: a 4000 K ambient photosphere and cool spots that have a temperature of 3000 K
Researchers have used ground-based photometry and spectra to study the unocculted starspots on the young star AU Mic. They find that AU Mic has at least two spectral components: a 4000 K ambient photosphere and cool spots that have a temperature of 3000 K and cover 39% of the surface. They also detect a third flux component, which they attribute to flare flux. This study will help us better understand the starspot coverage on AU Mic and other stars, which is important for interpreting the transm...
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A new study has discovered an inner ring in the disk in young binary system HD 34700
icon25. 10. 2023 (accepted)
iconStar
Image: A new study has discovered an inner ring in the disk in young binary system HD 34700
HD 34700 is a young binary system with a complex protoplanetary disk. A new study has discovered an inner ring in the disk, as well as extended logarithmic spiral arms and misaligned gas rotation patterns. These features suggest that the disk is being shaped by one or more physical mechanisms, such as the presence of an undetected planet or interaction with the surroundings. Further observations are needed to confirm these scenarios....
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Confirmation of TOI-5398 as the youngest compact multi-planet system composed of a hot sub-Neptune and a short-period Saturn
icon25. 10. 2023 (accepted)
iconStars | Exoplanets | TESS
Image: Confirmation of TOI-5398 as the youngest compact multi-planet system composed of a hot sub-Neptune and a short-period Saturn
The TOI-5398 system is a young (650 Myr old) and compact multi-planet system with a hot sub-Neptune orbiting interior to a short-period Saturn planet. The radius and mass of both planets have been measured, constraining their bulk composition....
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New analysis of the nearby LHS 1140 system: LHS 1140 b is either a temperate mini-Neptune or a water world
icon24. 10. 2023 (accepted)
iconStars | Exoplanets | Ocean plane
Image: New analysis of the nearby LHS 1140 system: LHS 1140 b is either a temperate mini-Neptune or a water world
A new analysis of LHS 1140 b and c, two temperate exoplanets orbiting a nearby star, reveals that LHS 1140 b is likely a mini-Neptune with a thin H/He envelope or a water world. LHS 1140 c remains consistent with a rocky planet, but there is a discrepancy in the transit depths measured by Spitzer and TESS. The candidate LHS 1140 d is not detected, and is attributed to stellar activity....
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The longest-period M dwarf exoplanet found orbiting TOI 904
icon23. 10. 2023 (accepted)
iconStars | Exoplane
Image: The longest-period M dwarf exoplanet found orbiting TOI 904
Two new sub-Neptunes, TOI-904 b and c, have been discovered orbiting the early M dwarf TOI-904. The outer planet, TOI-904 c, is the longest-period M dwarf exoplanet found by TESS, with period 84 days and an estimated equilibrium temperature of 217 K. Future mass measurements and transmission spectroscopy of the similar-sized planets in this system could determine whether they are also similar in density and composition, suggesting a common format...
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HD 152843 c has the longest orbital period of any known low-density exoplanet
icon23. 10. 2023 (accepted)
iconStars | Exoplane
Image: HD 152843 c has the longest orbital period of any known low-density exoplanet
The two planets in the HD 152843 system have nearly equal masses but differing radii, and the outer planet HD 152843 c has the longest orbital period of any known low-density exoplanet. HD 152843 c is also located in the Saturn valley, the observed lack of planets larger than Neptune but smaller than Saturn. The orbital periods of the planets suggest they are near a 5:3 mean motion resonance, and the brightness of the host star and the low densit...
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Second exoplanet discovered around star TOI 2134
icon20. 10. 2023 (accepted)
iconStars | Exoplanets | TESS
Image: Second exoplanet discovered around star TOI 2134
A temperate, highly eccentric sub-Saturn has been discovered orbiting the bright K-dwarf TOI-2134, in addition to an inner mini-Neptune that was discovered three years ago. The outer planet has a radius of 7.27 R⊕ and a mass of 41.86 M⊕, and a high eccentricity of 0.67, positioning it in the habitable zone of its system for part of its orbit. Further observations are needed to fully constrain the orbit of the outer planet and to study the spin-or...
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New warm Neptune discovered orbiting nearby red dwarf TOI 2015
icon18. 10. 2023 (accepted)
iconStars | TESS | Exoplane
Image: New warm Neptune discovered orbiting nearby red dwarf TOI 2015
The planet has more than 3 Earth radii and a 16 Earth masses, suggesting a likely volatile-rich planet. Transit timing variations in the system suggest the presence of an outer planet candidate near a 2:1 resonance, with a mass of 6.8 Earths. Further observations are needed to explicitly identify the resonance and further characterize the properties of the system....
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Exoplanets similar to Neptune have cloudy atmospheres and high metalicity
icon11. 10. 2023 (accepted)
iconStars | Exoplane
Image: Exoplanets similar to Neptune have cloudy atmospheres and high metalicity
A new analysis of exo-Neptune transmission spectra reveals that these planets have very cloudy atmospheres and high metallicity. Colder exo-Neptunes may have clearer atmospheres, making them better targets for future studies and the search for life beyond Earth...
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2 exoplanets discovered orbiting red dwarfs Gliese 724 and Gliese 3988
icon9. 10. 2023 (accepted)
iconStars | Exoplane
Image: 2 exoplanets discovered orbiting red dwarfs Gliese 724 and Gliese 3988
Both planets have short periods and relatively low masses, but Gliese 724 b is the most eccentric single exoplanet yet discovered around an M dwarf....
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Recently discovered exoplanets

 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
L 115-21 b 10 / 2026 0.4 M⊕ 41.9 ly
TIC 219893931 b 09 / 2026 8.9 M⊕ 1319.5 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
Newly discovered exoplanets
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Latest scientific studies

Browse the latest scientific studies on stars and exoplanets in our galaxy. Stellar Catalog provides access to scientific data from astrophysics and stellar or planetary astronomy. It's a resource for anyone interested in the newest discoveries about what lies beyond our solar system.

 Tau Ceti
11.9 ly
 study icon Measuring masses of transiting Earth-like planets: first insights from the PLATO RV data challenge
yesterday

Kepler-88
1231 ly
 study icon A Deep Learning Framework for TTV Characterization: A Case Study of the Kepler-88 System
28. 10. 2026

WISE J1517+0529
68.1 ly
 study icon Periodic radio emission from a rapidly rotating T8 ultracool dwarf
28. 10. 2026

WD 1202-024
2757 ly
 study icon A Model to Map Brown Dwarf Companions to White Dwarfs in Partial Secondary Eclipse
28. 10. 2026

V1298 Tauri
352 ly
 study icon The GAPS Programme at TNG LXXXI. The puzzle of the HeI absorption signal in the atmosphere of V1298 Tau b with GIARPS@TNG
27. 10. 2026

CQ Tauri
487 ly
 study icon A Warped Dust Ring in the CQ Tau Disk
27. 10. 2026

TOI 561
276 ly
 study icon A Highly Reflective Atmosphere on the Lava World TOI-561b Revealed by JWST/NIRSpec Phase Curves
27. 10. 2026

HAT-P-11
124 ly
 study icon Spatial variability of CH4-to-CO conversion pathways in irradiated gas giant atmospheres: implications for chemical relaxation and 1D quench schemes
27. 10. 2026

KIC 8462852
1470 ly
 study icon The anomalously large transiting planet around Boyajian's star: evidence for a circumplanetary ring
27. 10. 2026

Circinus X-1
31000 ly
 study icon Breaking the symmetry: X-ray polarization from a spreading layer on a tilted weakly magnetized neutron star
24. 10. 2026
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