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3. 10. 2026
Estrellas | Exoplanetas | Estrellas de tipo solar | Telescopio espacial James Webb | Atmósferas planetariLTT 9779 b is an ultrahot Neptune-sized exoplanet that occupies a rare region of space known as the hot Neptune desert, where such planets are seldom found. Despite its intense exposure to radiation from its host star, LTT 9779 b possesses a confirmed atmosphere. A new comprehensive study using data from the James Webb Space Telescope provides a detailed look at the chemical and physical characteristics of this exotic world's atmosphere.
By analyzing a broad range of light wavelengths, the st...
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3. 10. 2026Estrellas | ExoplaneOuter giant planets play a critical role in the development of planetary systems, yet their long orbital paths make them challenging to observe through traditional methods. By analyzing astrometric data from the Hipparcos and Gaia space missions, researchers have identified 29 candidate planets located far from their host stars. These findings suggest the presence of massive companions orbiting beyond the previously known planets in these systems...
Read article 3. 10. 2026Estrellas | Exoplanetas | Enanas rojas | Telescopio espacial James Webb | Atmósferas planetariRocky planets orbiting Red dwarf stars present a unique challenge for observers because the stars themselves often have active surfaces that can mimic the signals of an atmosphere. A new analysis method has been developed to separate these stellar signals from potential atmospheric data. By applying this technique to four observations of the planet TRAPPIST-1 c, researchers have determined that the planet does not show evidence of a significant, ...
Read article 3. 10. 2026Estrellas | Exoplanetas | ALMA | Formación planetaria | Enana naranjEpsilon Eridani, a nearby orange dwarf star located about 10.5 light-years away, hosts the closest known debris disk - a ring of dust and icy rocks orbiting the star. This system also features a large planet, Epsilon Eridani b, which is similar to Jupiter. New measurements of the outer debris belt suggest it is remarkably circular and dynamically cold, meaning the particles within it have very orderly, stable orbits.
To determine the shape of ...
Read article 30. 9. 2026Estrellas | Exoplanetas | Telescopio espacial James Webb | Atmósferas planetarias | Estrellas de tipo solarLTT 9779 b is a Neptune-sized planet that orbits extremely close to its parent star, placing it within the so-called hot Neptune desert - a region where such planets are rarely found due to intense stellar radiation. Observations of this planet are essential to understanding how its atmosphere manages to persist under these extreme conditions. New data from the James Webb Space Telescope provides a broad look at the chemical and physical characte...
Read article 30. 9. 2026Estrellas | Exoplanetas | TESS | Enanas rojA new sub-Neptune planet, TOI-6981 b (LSPM J0804+1116 b), has been identified orbiting a Red dwarf star. The planet is notable for its cold temperature of approximately 170 Kelvin (minus 103 degrees Celsius), which positions it at the water ice line. This is the boundary in a star system where it is cold enough for water vapor to condense into solid ice. Its unique location and characteristics offer a rare opportunity to study cold planetary atmo...
Read article 30. 9. 2026Estrellas | ExoplaneHIP 67522 is a young star system, aged only 17 million years, which hosts two giant planets. By observing the timing of when these planets cross in front of their host star—an event known as a transit—researchers can detect subtle shifts in the schedule caused by the gravitational tugging between the two worlds. These variations in timing, known as transit timing variations, serve as a precise tool for calculating the masses and orbital character...
Read article 30. 9. 2026Estrellas | ExoplaneLHS 3844 b is a rocky super-Earth orbiting a nearby Red dwarf. Because it lacks a significant atmosphere and does not have a molten magma ocean on its dayside, it serves as a unique laboratory for studying the surface of planets outside our solar system. By analyzing the planet’s heat signatures, researchers can infer what kind of rock covers its surface.
The James Webb Space Telescope captured detailed mid-infrared light emissions from the pl...
Read article 29. 9. 2026Estrellas | Exoplanetas | Exoplanetas habitableLHS 1140 b is a rocky planet orbiting within the habitable zone of a Red dwarf star. Previous observations detected helium escaping from the planet as it transited, or passed in front of, its host star. Because stars emit high-energy radiation that can strip away planetary atmospheres, researchers analyzed whether fluctuations in the star's X-ray and ultraviolet output could explain the changing levels of escaping helium.
Using the XMM-Newton ...
Read article 29. 9. 2026Estrellas | Exoplanetas | Enana naranjThe 61 Cygni binary system, located approximately 11.4 light-years from Earth, is one of our closest neighbors and a primary target for searching for Earth-like planets. New analysis of this system provides evidence for a candidate giant planet orbiting the stars. The object, categorized as a super-Jupiter—a planet significantly more massive than Jupiter—is estimated to orbit at a distance similar to that of the outer planets in our own solar sys...
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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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