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Latest astronomy noticias
Manténgase al día con las últimas noticias astronómicas, descubrimientos sobre estrellas y exoplanetas, e investigaciones actuales. Explore artículos recientes del mundo de la astronomía.
1. 8. 2026
Estrellas | ExoplaneThe π Mensae star system, which hosts the first exoplanet detected by the Transiting Exoplanet Survey Satellite (TESS), has been the subject of a comprehensive new study. By combining six years of TESS photometry — the measurement of a star's brightness over time to detect dips caused by orbiting planets — with 22 years of radial velocity data, which tracks the tiny wobbles in a star’s motion caused by a planet’s gravitational pull, this research provides the most precise orbital information to ...
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1. 8. 2026Estrellas | Exoplanetas | Formación planetariThe protoplanetary disk surrounding the star HD 169142 contains complex dust structures that provide clues about how planets form. A new analytical framework has been developed to process data from the Atacama Large Millimeter/submillimeter Array (ALMA), an interferometer that combines radio telescopes to capture high-resolution images. This method improves upon traditional techniques by reducing biases caused by limited image resolution, allowin...
Read article 1. 8. 2026Estrellas | Exoplanetas | TESSResearchers have completed a detailed re-analysis of two planetary systems, TOI-4438 and TOI-442, providing more precise physical data for their orbiting planets. By combining new transit observations from the TESS space telescope with high-resolution infrared spectroscopy, the study clarifies the properties of these worlds. The analysis also investigated the magnetic activity of the host stars, which are both Red dwarf stars, to improve the accu...
Read article 1. 8. 2026Estrellas | Exoplanetas | Atmósferas planetarias | Exoplanetas habitableSpectroscopic observations have identified escaping helium from the atmosphere of LHS 1140b, a rocky exoplanet located within the habitable zone of its host star. While scientists have previously observed atmospheric loss on massive gas giants, such evidence for rocky, Earth-like worlds is rare. This finding provides significant insight into the evolution and composition of planetary atmospheres in systems orbiting low-mass stars.
The findings...
Read article 1. 8. 2026Estrellas | ExoplaneTIC 241249530 b is a rare, highly eccentric planet often described as a hot Jupiter progenitor. Orbiting a star at a distance that varies significantly, this planet is currently in the process of migrating toward its host star. This transition is driven by high-eccentricity migration, a process where a planet’s orbit is stretched into a very elongated shape, eventually shrinking and circularizing due to intense tidal forces.
The research exami...
Read article 1. 8. 2026Estrellas | Exoplanetas | Formación planetariPlanet formation begins within protoplanetary disks, which are swirling clouds of gas and dust surrounding young stars. To understand how planets emerge, it is critical to determine the size of dust grains within these disks. A new method has been developed to estimate these sizes by measuring how quickly different regions of a disk cool down. This technique specifically analyzes transitional disks where an inner disk is tilted, casting a distinc...
Read article 1. 8. 2026Estrellas | Exoplanetas | Telescopio espacial James Webb | Atmósferas planetariWASP-39 b is a hot Jupiter, a large gas giant planet that orbits its host star at a very close distance, resulting in extremely high temperatures. Understanding the chemical makeup of its atmosphere provides insights into how the planet formed. A new analysis of data from the James Webb Space Telescope has now provided a precise inventory of the carbon and oxygen-bearing molecules in this planet's atmosphere using a single observation mode.
Th...
Read article 1. 8. 2026Estrellas | Exoplanetas | Formación planetariAB Aurigae is a young star surrounded by a protoplanetary disk—a rotating ring of gas and dust where planets are currently forming. Recent observations have mapped the chemical composition of this disk, finding that molecules are not spread evenly. Instead, certain chemicals concentrate in specific areas, suggesting that both external material falling into the disk and the birth of new planets significantly shape its internal environment.
Rese...
Read article 1. 8. 2026Estrellas | Exoplanetas | Atmósferas planetariThe atmosphere of the hot Jupiter exoplanet WASP-39b contains detectable amounts of deuterated water, also known as heavy water. This molecule, denoted as HDO, consists of one hydrogen atom, one oxygen atom, and one deuterium atom—a heavier isotope of hydrogen containing an extra neutron. This finding provides critical insight into the chemical history and evolution of this distant planet, which is located 702 light-years from our Sun.
The res...
Read article 1. 8. 2026Estrellas | ExoplaneTabby's star, known scientifically as KIC 8462852, has long puzzled observers due to its deep, irregular dimming events. While these events were often attributed to clouds of dust from disintegrating comets or asteroids, new data from the Transiting Exoplanet Survey Satellite (TESS) show a unique, symmetric transit signature. This pattern suggests the presence of a massive object, such as a large planet or a brown dwarf, moving in front of the 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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