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31. 8. 2026
Estrellas | Exoplanetas | Júpiter calienteFour 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 multi-star systems.
Researchers employed the EXtr...
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31. 8. 2026Estrellas | Exoplanetas | Atmósferas planetariThe 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. 2026Estrellas | Exoplanetas | TESS | Gigantes | SubgiganteA 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...
Read article 31. 8. 2026Estrellas | Exoplanetas | Telescopio espacial James Webb | Atmósferas planetariRecent analysis of data from the James Webb Space Telescope, the Hubble Space Telescope, and ground-based observations suggests that the exoplanet Gliese 1132 b is likely a bare rocky world. By examining the light filtering through the planet’s edges as it passes in front of its host star, the data reveals a featureless transmission spectrum, meaning no clear chemical fingerprints of an atmosphere were detected.
The study compared various mode...
Read article 31. 8. 2026Estrellas | Exoplanetas | KeplerThe star Kepler-50 hosts two known planets that pass in front of their host star from our perspective, an event known as a transit. These two planets are locked in a near-resonant relationship, meaning their orbital periods are mathematically related. Analysis of their transit times reveals small, irregular timing variations, which indicate the presence of a third, non-transiting planet tugging on them through gravity.
Researchers examined dat...
Read article 31. 8. 2026Estrellas | Exoplanetas | TESS | Júpiter calienteA new planetary system has been identified orbiting the star TOI-4468, featuring a hot Jupiter and a nearby outer sub-Neptune. This system is unique because it includes a close outer companion to a hot Jupiter without any inner planets, a configuration not typically seen in the current census of known worlds. These findings provide new insights into how these massive, short-period planets form and evolve over time.
The research confirmed the p...
Read article 31. 8. 2026Estrellas | ExoplaneTRAPPIST-1 is a small, cool star known for hosting several Earth-sized planets. Because very low-mass stars do not change much over time, they preserve the chemical signature of the cloud of gas and dust from which they formed. Understanding the chemical makeup of such a star provides essential clues about the building materials available to its planets during their formation process.
The chemical composition was determined by analyzing high-r...
Read article 31. 8. 2026Estrellas | Exoplanetas | Atmósferas planetariThe young exoplanet V1298 Tauri b is a warm sub-Neptune orbiting a very young orange dwarf star. Recent observations from the James Webb Space Telescope have revealed an atmospheric mystery: the planet contains far less methane than expected, while showing surprising levels of carbon dioxide. This phenomenon, known as the missing methane problem, has been observed in several cool planets, where standard chemical models fail to predict the observe...
Read article 23. 8. 2026Estrellas | ExoplaneEclipsing binary stars—systems where two stars periodically pass in front of each other from our perspective—often show small shifts in their orbital timings. These shifts, known as apsidal motion, are sometimes used to search for third objects like planets orbiting both stars. This study evaluates two such systems, CH Ind and SW CMa, to determine if their observed orbital changes truly indicate the presence of external planets or if they are sim...
Read article 23. 8. 2026Estrellas | ExoplaneThe exoplanet Gliese 514 b orbits within the habitable zone of a Red dwarf star located approximately 25 light-years from Earth. Because the planet follows an eccentric path—meaning its orbit is more oval-shaped than circular—it experiences significant seasonal changes in the amount of stellar light it receives. These conditions make it an important target for future direct-imaging missions, prompting an assessment of its potential surface climat...
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Exoplanetas recién descubiertos
| 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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