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Latest astronomy zprávy
Zůstaňte v obraze s nejnovějšími astronomickými zprávami, objevy o hvězdách a exoplanetách a aktuálním výzkumu. Prozkoumejte čerstvé články ze světa astronomie.
12. 9. 2026
Hvězdy | Exoplanety | Horký Jupiter | TESSWASP-43 b is a hot Jupiter, a massive gas giant planet that orbits extremely close to its host star, causing it to have a very high surface temperature. By analyzing five sectors of observations from the TESS space telescope, researchers mapped the planet's phase curve—the change in brightness as the planet orbits its star—to study the composition of its atmosphere and determine if it possesses reflective clouds on its dayside.
To investigate the atmospheric properties, the TESS data were com...
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12. 9. 2026Hvězdy | ExoplanetyThe planet WASP-12 b is gradually spiraling toward its host star, a phenomenon known as orbital decay. Its orbital period is shrinking at a rate that cannot be explained by standard tidal interactions—the gravitational friction between a star and its orbiting planet—that typically occur in main-sequence stars, which are stars in the stable, hydrogen-burning phase of their lives.
One theory suggested that obliquity tides, which occur when a pla...
Read article 12. 9. 2026Hvězdy | Exoplanety | Atmosféry planeThe ultra-hot Jupiter KELT-20b, also known as MASCARA-2b, maintains an equilibrium temperature of approximately 2300 Kelvin. Due to this intense heat, the planet serves as a natural laboratory for studying planetary atmospheres. By analyzing seven separate transits, where the planet passed in front of its host star, new details regarding the chemical composition and the spatial structure of its gaseous envelope have been characterized.
Researc...
Read article 9. 9. 2026Hvězdy | Exoplanety | ObřiThe Pi Mensae star system hosts a complex arrangement of planets, including a massive giant planet known as planet b, a small transiting sub-Neptune planet c, and a candidate planet d orbiting between them. New research examines how the gravitational influence of the outer giant planet b impacts the orbital path of the middle planet d, specifically focusing on its eccentricity, which describes how much an orbit deviates from a perfect circle.
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Read article 9. 9. 2026Hvězdy | Exoplanety | Mladé hvězdné objekty | Vznik planeThe planet-forming disk surrounding the young binary star system DQ Tau is significantly influenced by the variable radiation and matter-gathering processes of its host stars. By analyzing light emissions from the disk, it is possible to understand how stellar activity, such as X-ray flares and changes in accretion—the process where a star pulls in material from its surroundings—impacts the physical and chemical environment where new planets may ...
Read article 9. 9. 2026Hvězdy | ExoplanetyThe Nu Octantis system consists of a compact binary star pair and a planet in a retrograde orbit, meaning the planet moves in the opposite direction to the rotation of the stars. This planet orbits near the limit of gravitational stability, making its long-term presence a complex dynamical challenge. By modeling various potential orbital configurations, researchers have sought to determine how this world maintains a stable path despite the intens...
Read article 5. 9. 2026Hvězdy | Exoplanety | Atmosféry planet | Lávové planetyTOI-561 b is a rocky, ultrashort-period exoplanet that orbits its star extremely quickly, resulting in intense irradiation. Recent data suggests this world may possess a thick, secondary atmosphere hovering above a global, molten surface, or magma ocean. Unlike the primary atmospheres of giant planets, which are captured from gas clouds, a secondary atmosphere is generated by gases released from the planet's interior over time.
Researchers use...
Read article 31. 8. 2026Hvězdy | Exoplanety | Horký JupiterFour hot-Jupiter planets orbiting within binary star systems have been characterized for their orbital alignment. These massive gas planets, known as KELT-2 Ab, KELT-3 Ab, TOI-1333 Ab, and TOI-1789 Ab, were studied to understand how their orbits interact with their host stars. The study focused on whether these planets orbit in line with the rotation of their parent stars, providing insight into the complex dynamical processes occurring within mu...
Read article 31. 8. 2026Hvězdy | Exoplanety | Atmosféry planeThe ultra-hot Jupiter WASP-12b is leaking gas into space, forming a structure that does not follow the planet's orbit. By observing the planet as it passes in front of its host star, researchers detected hydrogen-alpha light—a specific signature of hot hydrogen gas—that reveals how the atmosphere escapes the planet's gravitational control and shears into long tidal tails.
Using high-resolution transit spectroscopy, which measures how light is ...
Read article 31. 8. 2026Hvězdy | Exoplanety | TESS | Obři | PodobřiA rare, ultra-hot super Neptune planet named TOI-5646b has been confirmed orbiting the subgiant star TOI-5646. This planet resides within the Neptune desert, a region where such planets are seldom found due to intense stellar radiation. TOI-5646 is notable for being the largest star discovered to date that hosts a Neptune-sized planet in this harsh environment, offering new insights into how planetary systems evolve and survive extreme conditions...
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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 | |
| 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 |
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