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27. 10. 2026
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A giant planet candidate near Boyajian’s star may look oversized because a broad ring system surrounds it, not because the planet itself is unusually large. New atmospheric models also show why methane and carbon monoxide can vary across hot gas giants, exposing major limits in simpler predictions.
70 Ophiuchi and 36 Ophiuchi binary systems show potential for supporting stable habitable planets
icon23. 8. 2026
iconHvězdy | Exoplanety
Image: 70 Ophiuchi and 36 Ophiuchi binary systems show potential for supporting stable habitable planets
Numerical simulations have evaluated whether planets in the 70 Ophiuchi, 36 Ophiuchi, and Gamma Leonis binary systems can remain stable in their habitable zones. The habitable zone is the range of distances from a star where conditions might allow liquid water to exist on a planet's surface. While Gamma Leonis is unlikely to support stable planets due to its extreme orbital dynamics, the 70 Ophiuchi and 36 Ophiuchi systems show promising conditions for long-term planetary stability. Researche...
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Atmospheric composition of stars AF Leporis A and Epsilon Indi A characterized
icon23. 8. 2026
iconHvězdy | Exoplanety | Atmosféry plane
Image: Atmospheric composition of stars AF Leporis A and Epsilon Indi A characterized
Understanding how planets form requires detailed knowledge of the chemical makeup of their host stars. This study provides a comprehensive analysis of the host stars AF Leporis A and Epsilon Indi A, which are known to harbor cold, directly imaged planets. By examining the light from these stars with high-resolution spectroscopy—a technique that breaks down starlight into its component colors to identify chemical elements—the composition of their ...
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Precision timing of planet HD 80606b reveals orbital stability and constraints on companions
icon23. 8. 2026
iconHvězdy | Exoplanety | Vesmírný dalekohled Jamese Webb
Image: Precision timing of planet HD 80606b reveals orbital stability and constraints on companions
The exoplanet HD 80606b is a massive gas giant known for its extreme eccentricity, meaning its path around its host star is highly elongated rather than circular. Because it transits and is eclipsed by its host star, the G5V star HD 80606, it serves as a unique laboratory for studying planetary dynamics. New high-precision data from the James Webb Space Telescope, combined with 25 years of previous radial velocity measurements, were used to exami...
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Mantle composition and mineralogy of super-Earth Gliese 486b characterised through stellar abundance
icon23. 8. 2026
iconHvězdy | Exoplanety | Superzemě
Image: Mantle composition and mineralogy of super-Earth Gliese 486b characterised through stellar abundance
The internal makeup of the super-Earth Gliese 486b has been estimated by analyzing the chemical properties of its host star. Because rocky planets typically inherit their chemical composition from the materials that formed their parent stars, understanding the composition of a star provides a window into the building blocks of its orbiting planets. This research provides a new framework that links stellar chemical data to the internal structure a...
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Analysis of existing JWST data attempts to detect outer planets of Trappist-1
icon23. 8. 2026
iconHvězdy | Exoplanety | Vesmírný dalekohled Jamese Webb
Image: Analysis of existing JWST data attempts to detect outer planets of Trappist-1
The Trappist-1 system, a small star orbited by seven Earth-sized planets, has been a major target for the James Webb Space Telescope. While the inner planets have been studied directly, the potential to detect thermal emission—the heat energy radiated by a planet—from the outer planets remains a significant challenge due to interference from the host star itself. This analysis compiled existing observations from five separate projects to see i...
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Observations of planet LHS 1140 b show no persistent signs of helium escape
icon23. 8. 2026
iconHvězdy | Exoplanety | Vesmírný dalekohled Jamese Webb
Image: Observations of planet LHS 1140 b show no persistent signs of helium escape
Recent observations of the temperate planet LHS 1140 b have provided new insights into its atmosphere. While previous data suggested the presence of helium escaping from the planet, detailed analysis of four planetary transits—the period when a planet passes in front of its star—reveals no consistent evidence of such activity, indicating that earlier detections may have been influenced by stellar changes or instrumental factors. Researchers ex...
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Asymmetric aerosol distribution observed on the warm Saturn planet WASP-69 b
icon23. 8. 2026
iconHvězdy | Exoplanety | Vesmírný dalekohled Jamese Webb
Image: Asymmetric aerosol distribution observed on the warm Saturn planet WASP-69 b
The warm Saturn-sized exoplanet WASP-69 b exhibits significant atmospheric differences between its morning and evening sides. New observations reveal an asymmetric distribution of aerosols—tiny particles suspended in the atmosphere—which create distinct cloud conditions across the planet. This discovery helps explain how planets at temperatures near 1,000 Kelvin manage the cycle of cloud formation and evaporation as material travels around the gl...
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Geometric model explains the brightness temperature of planet 55 Cancri e
icon13. 8. 2026
iconHvězdy | Exoplanety
Image: Geometric model explains the brightness temperature of planet 55 Cancri e
The thermal characteristics of 55 Cancri e, an ultra-short period rocky planet, are better understood by accounting for the planet’s three-dimensional geometry and its rotation. By calculating how sunlight hits the planet at various angles throughout its day, it is possible to model the temperature distribution across its surface more accurately. This approach clarifies why the planet exhibits a specific thermal imprint observed by telescope meas...
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Sulfur-rich atmosphere of planet AF Lep b reveals history of solid accretion
icon13. 8. 2026
iconHvězdy | Exoplanety | Atmosféry plane
Image: Sulfur-rich atmosphere of planet AF Lep b reveals history of solid accretion
AF Lep b is a young gas giant planet with a mass roughly three to four times that of Jupiter, orbiting its host star at a distance of approximately 9 astronomical units. Recent observations using the James Webb Space Telescope have allowed for a detailed look at the chemical composition of its atmosphere, providing new insights into how this massive planet formed and grew during the early stages of its solar system. The research team analyzed ...
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Formation of giant planets PDS 70 c and SR 12 c mirrors our solar system
icon13. 8. 2026
iconHvězdy | Exoplanety | Vznik plane
Image: Formation of giant planets PDS 70 c and SR 12 c mirrors our solar system
The young planetary systems PDS 70 and SR 12 provide new insights into how giant planets and their moons form. By studying the dust disks surrounding the planets PDS 70 c and SR 12 c, it is clear that these distant worlds share significant similarities with the development of Jupiter and Saturn. These observations help explain how gas and dust accumulate to form planets and smaller satellites in the early stages of a star system's life. The pl...
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Nově objevené exoplanety

 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

Projděte si nejnovější vědecké studie o hvězdách a exoplanetách v naší galaxii. Objevte nejnovější výzkumy astrofyziky a hvězdné astronomie.

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