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Manténgase al día con las últimas noticias astronómicas, descubrimientos sobre estrellas y exoplanetas, e investigaciones actuales. Explore artículos recientes del mundo de la astronomía.
29. 9. 2026
Estrellas | Exoplanetas | Telescopio espacial James Webb | Atmósferas planetariThe James Webb Space Telescope has provided detailed data on the atmospheres of two sub-Neptune planets orbiting the sun-like star TOI-125. By studying these two planets, TOI-125 b and TOI-125 c, within the same star system, researchers can compare how their atmospheres formed and evolved under similar conditions. Both planets show signs of dense, cloud-covered atmospheres or high levels of heavy elements, often referred to as metal enrichment, which challenges existing planetary models.
The ...
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29. 9. 2026Estrellas | Exoplanetas | Formación planetariThe TW Hydrae protoplanetary disk, a swirling cloud of gas and dust surrounding a young star where planets are currently forming, contains a prominent localized accumulation of dust located at a distance of 52 astronomical units from the star. New observations provide a high-resolution look at the internal structure and movement of this feature, which is commonly referred to as a dust blob. The study clarifies how this material moves and its poss...
Read article 29. 9. 2026Estrellas | Exoplanetas | Estrellas de tipo solarA new low-mass planet, HD 126053 b, has been confirmed orbiting a solar-type star located within 25 parsecs (approximately 81.5 light-years) of the Sun. This planet completes an orbit around its host star every 10.91 days. The discovery was made using extreme precision radial velocity instruments, which detect the tiny wobbles in a star's position caused by the gravitational pull of orbiting planets. This method allows for the identification of s...
Read article 29. 9. 2026Estrellas | Exoplanetas | Hubble | Enana naranjThe rocky exoplanet TOI-2431 b, which orbits its host star in just 5.4 hours, has been studied using the Hubble Space Telescope to analyze its thermal characteristics. This planet is characterized by an extreme surface environment where day-night heat redistribution appears highly inefficient, preventing the transport of heat from the dayside to the nightside. This finding offers new insights into the nature of ultra-short-period planets.
Rese...
Read article 26. 9. 2026Estrellas | Exoplanetas | Objetos estelares jóveneThe infant star V1298 Tau, only about 20 million years old, hosts a system of four transiting planets. Determining the masses of these young worlds is essential for understanding how planetary systems form and evolve. Recent observations have provided updated mass constraints for these planets by monitoring the star over four and a half years to detect the subtle gravitational wobbles they induce on their host.
Researchers analyzed over 380 hi...
Read article 25. 9. 2026Estrellas | Exoplanetas | Formación planetariThe Beta Pictoris debris disk—a massive ring of dust and rocky material surrounding a young star—contains a distinct structure called the Cat's Tail. By combining years of observations from the Hubble Space Telescope, researchers have captured the first visible and near-infrared light from this feature, allowing for a detailed study of the materials and origins of this unique dust formation.
Data gathered between 2012 and 2025 enabled the iden...
Read article 25. 9. 2026Estrellas | ExoplaneBeta Pictoris is a young, well-studied star system already known to host planets and a vast outer debris disk. New observations have provided a clearer look at the hot, fine dust orbiting very close to the star, known as exozodiacal dust. This material represents the fine, pulverized remains of collisions within the system and offers clues into the complex environment where planets and comets interact.
Using the MATISSE instrument at the Very ...
Read article 25. 9. 2026Estrellas | Enanas marrones | Telescopio espacial James Webb | GaiThe brown dwarf WISEA J155349.96+693355.2 is a low-temperature, metal-poor object identified as the first of its kind to be associated with the Gaia-Enceladus substructure. This group of stars was once part of a separate dwarf galaxy that collided with our Milky Way billions of years ago. Observations have confirmed that this brown dwarf follows a distinct, highly eccentric orbit consistent with objects that originated outside the Milky Way and w...
Read article 25. 9. 2026Estrellas | Exoplanetas | | Formación planetariThe protoplanetary disk—a rotating ring of gas and dust forming planets—surrounding the star HD 163296 has been analyzed to search for signs of Axion-like particles. These theoretical particles are proposed candidates for ultralight dark matter, which could interact with light by causing birefringence, a phenomenon that rotates the polarization angle of light as it travels through space.
By examining six sets of archival near-infrared polarize...
Read article 24. 9. 2026Estrellas | Exoplanetas | Telescopio espacial James Webb | TESS | Júpiter calienteTOI-2109 b is an extreme gas giant known as an ultra-hot Jupiter, orbiting its host star in less than 17 hours. It possesses a mass over five times that of Jupiter and is currently recognized as having the fastest predicted orbital decay of any known giant planet. Recent data from the James Webb Space Telescope and the Hubble Space Telescope have provided evidence of complex gravitational influences affecting the planet's path as it orbits its st...
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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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