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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.
15. 5. 2026
Hvězdy | ExoplanetyTRAPPIST-1 is a system of planets orbiting a low-mass star, with several planets considered potentially habitable. This study uses a version of the HEXTOR energy balance model to explore the possible climate states of these planets, focusing on those that are similar to Earth and orbit in a way that keeps the same side facing their star. The model is first tested on rapidly rotating, Earth-like planets and shows expected patterns of climate stability. It is then adapted for tidally locked planet...
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15. 5. 2026Hvězdy | ExoplanetyHAT-P-70b is an ultra-hot Jupiter, a type of giant planet that orbits very close to its star and experiences extreme temperatures. The dayside of HAT-P-70b is so hot that many metals become ionized, while the nightside remains cool enough for some elements to condense. Using the MAROON-X high-resolution spectrograph, researchers studied the planet’s atmosphere and detected fourteen different metals, including iron, titanium, calcium, chromium, so...
Read article 15. 5. 2026Hvězdy | Exoplanety | Superzemě | Červení trpaslíci | TESS
Ross 318 (Gliese 48) is a red dwarf star with strong magnetic activity and a rotation period of about fifty-one and a half days. Researchers analyzed over a decade of radial velocity data from CARMENES and HIRES, along with TESS space telescope observations, to search for planets around this star. They discovered a planet, Ross 318 b (Gliese 48 b), which has a minimum mass about six times that of Earth and orbits the star every thirty-nine days. ...
Read article 15. 5. 2026HvězdyV1094 Sco is a large protoplanetary disk that displays several pairs of rings and gaps far from its central star. Using high-resolution images from the Atacama Large Millimeter/submillimeter Array and the Very Large Telescope, researchers studied the disk's structure in detail. The dust in the disk forms four narrow ring-gap pairs at large distances, while gas traced by carbon monoxide extends even farther and moves in a pattern called Keplerian ...
Read article 15. 5. 2026Hvězdy | Exoplanety | Hnědí trpaslíci51 Pegasi is a Sun-like star known for hosting the first confirmed planet outside our solar system. Recent research has analyzed over thirty years of data to search for another, more distant companion in this system. Scientists combined radial velocity measurements, astrometry, and high-contrast imaging to look for signs of a giant planet or brown dwarf far from the star. The data show a slight acceleration in the star's motion, which could be ca...
Read article 14. 5. 2026Hvězdy | ExoplanetyTOI-4311 is an orange dwarf star located between the Galactic thick disk and Hercules stream. This star hosts two planets: an ultra-short-period super-Earth and a longer period sub-Neptune. The super-Earth completes an orbit in about one day and is very dense, while the sub-Neptune has a longer orbit of around fifteen days. These planets were first detected by the TESS space telescope, and their properties were refined using CHEOPS and HARPS obse...
Read article 9. 5. 2026Hvězdy | Exoplanety | TESS | Horký JupiterAstronomers have confirmed TOI-159 b, a giant planet orbiting a young (about 150 million years old), fast-rotating, and pulsating Doradus star. This planet is the hottest known hot Jupiter with a significant orbital eccentricity, making it a rare find. The host star's rapid rotation and pulsations make such discoveries challenging, but the team used a combination of radial velocity, transit, and spectro-photometric data to confirm the planet and ...
Read article 9. 5. 2026Hvězdy | Vznik planet | ExoplanetyHD 142527 is a young star with a complex disk and a known low-mass companion. Using advanced imaging techniques with VLT/SPHERE, astronomers explored the inner region of the system, searching for hidden companions and features that shape the disk. They confirmed and updated properties of the known companion, HD 142527 B, and identified a new candidate companion about 14 au from the star, which could be a young planet, brown dwarf, or a disk featu...
Read article 9. 5. 2026HvězdyResearchers observed the near-UV (NUV) transit of XO-3 b, a massive hot Jupiter with an eccentric orbit, using XMM-Newton and ground-based telescopes. The NUV transit was found to be 30-70% deeper than in the optical, suggesting a large NUV-absorbing atmosphere. Interestingly, the NUV transit occurred about 22 minutes later than expected from optical data, even though the optical transits showed no timing variations.
The team explored possible...
Read article 9. 5. 2026HvězdyTRAPPIST-1, an ultra-cool dwarf star, is known for frequent stellar flares that impact its planets' atmospheres and can interfere with observations. Researchers combined data from JWST and Kepler/K2 to analyze the flare-frequency distribution (FFD) across four orders of magnitude in energy. By converting all flare energies to the TESS bandpass and correcting for detection sensitivities, they found that the cumulative FFD follows a single power la...
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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 |
Newly discovered exoplanets
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