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Zůstaňte v obraze s nejnovějšími astronomickými zprávami, objevy o hvězdách a exoplanetách a aktuálním výzkumu. Prozkoumejte čerstvé články ze světa astronomie.
6. 6. 2026
Hvězdy | ExoplanetyAstronomers have identified two young, large-radius planets orbiting the F-type star HD 114082, marking them as the longest-period young transiting exoplanets currently known. These planets, designated b and c, were detected through a collaborative effort using data from multiple space and ground-based telescopes, including TESS, the Next-Generation Transit Survey (NGTS), the Characterising Exoplanet Satellite (CHEOPS), and the Antarctic Search for Transiting ExoPlanets (ASTEP+). Their discovery...
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6. 6. 2026Hvězdy | Exoplanety | TESS | Horký Jupiter | Hvězdy podobné SlunciUnderstanding how giant planets evolve is essential for building a complete picture of planetary systems. While many exoplanets have been found, studying their changes over time requires observing systems in different stages of development. A recent discovery has added three new gas giant planets — known as hot Jupiters — orbiting stars that are approaching the end of their main sequence, a critical but less studied phase of planetary life.
Th...
Read article 6. 6. 2026Hvězdy | Exoplanety | Atmosféry planet | Červení trpaslíciThe search for life on distant planets often relies on identifying biosignatures — gases like oxygen or methane that are produced by biological processes. However, a new study highlights how the specific ultraviolet (UV) radiation from a host star can significantly influence a planet's atmospheric chemistry, potentially creating false-positive signals that might be mistaken for life. The research focused on the planet TRAPPIST-1 e, which orbits a...
Read article 6. 6. 2026Hvězdy | ExoplanetyStars born from the same cloud in a binary system are generally expected to have identical chemical compositions. However, some binary systems exhibit unexplained chemical differences, leading researchers to debate whether these anomalies originate from their birth environment or are the result of external events. This study examines the binary pair HD 129171 and HD 129209, which show significant differences in their abundances of iron, lithium, ...
Read article 4. 6. 2026Hvězdy | ExoplanetyThe binary star system HD 81809 presents a significant chemical mystery, as its two components exhibit a striking difference in metallicity — the abundance of elements heavier than hydrogen and helium. While the primary star has a low metallicity, the secondary star, HD 81809B, shows a metallicity closer to that of our Sun. Scientists are investigating whether this anomaly could be the result of the secondary star having engulfed one or more plan...
Read article 4. 6. 2026Hvězdy | ExoplanetyHD 209458b is perhaps the most famous hot Jupiter, having been the first planet where researchers successfully measured atmospheric composition and discovered hints of aerosol-related effects. These massive, hot gas giants provide essential insights into planetary atmospheres, but confirming the specific composition of their clouds has remained a challenge. New observations from the James Webb Space Telescope (JWST) have now directly measured the...
Read article 4. 6. 2026Hvězdy | ExoplanetyUnderstanding the orientation of an exoplanet's orbit relative to its host star's rotation provides essential clues about the system's past. A key method for measuring this alignment is the Rossiter-McLaughlin effect, which occurs when a transiting planet blocks different parts of a rotating star, creating a characteristic shift in the star's spectral lines. Researchers have now introduced an improved modelling framework within the exoplanet anal...
Read article 4. 6. 2026Hvězdy | ExoplanetyThe Pan-Pacific Planet Search was a six-year survey that monitored 164 southern evolved stars to detect potential orbiting companions using radial-velocity measurements, which track the slight wobble of a star caused by the gravitational pull of orbiting objects. In their final data release, researchers aimed to resolve the true nature of six speculative candidates that had been identified during the survey.
By combining new radial-velocity da...
Read article 4. 6. 2026Hvězdy | ExoplanetyTWA 5 B is a directly imaged sub-stellar companion, a type of object often categorized as a gas giant or brown dwarf. Understanding the chemical composition of these atmospheres is essential for learning how they formed. Silicon is a particularly important element, as it is a refractory material — a substance that remains solid at relatively high temperatures — and it plays a major role in the formation of magnesium-silicate clouds, which are sim...
Read article 4. 6. 2026HvězdyProtoplanetary disks, the rotating disks of gas and dust that surround young stars, are the environments where planets are born. Scientists study these disks to understand the chemical ingredients available during planet formation, which can provide clues about the potential for life. A recent investigation has identified a new, complex molecule within the disk surrounding the star TW Hya, known as a Class II disk, which is in a mature phase of d...
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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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