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Stellar Brief: 20. 10. 2026
Today’s standout finding changes the story of PDS 70: the young star is estimated to be 12 to 16 million years old, about three times older than previously thought. Alpha Centauri was the leading Stellarcatalog search query, with 1,537 impressions on October 19.
Read today's Stellar Brief
Latest astronomy noticias
24. 6. 2026
Estrellas | ExoplaneTOI-6894 b is a temperate gas giant planet orbiting a red dwarf star. With a temperature of 420 Kelvin, this sub-Saturn sized world is a unique object of study as the only known giant planet transiting a very low-mass red dwarf star. Recent observations have provided a clear look at its chemical composition, showing that its atmospheric structure and metal content closely mirror those of the gas giants within our own solar system.
The planet's atmosphere contains significant levels of methane...
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24. 6. 2026Estrellas | ExoplaneA third giant exoplanet has been discovered in the Beta Pictoris system through direct imaging, marking a significant milestone in planetary science. This new world, designated Beta Pictoris d, joins two previously known planets orbiting this young, nearby star. The discovery was made by combining modern ground-based observations with archival data, revealing a planet that orbits at a greater distance than its siblings while remaining aligned in ...
Read article 22. 6. 2026Estrellas | Exoplanetas | Atmósferas planetarias | TESSSub-Neptunes—planets larger than Earth but smaller than Neptune—exhibit a wide variety of atmospheric compositions. These characteristics are dictated by the raw materials available during a planet's formation, such as rock, water, and refractory carbon, commonly referred to as soot. By modeling how these materials assemble to form planetary interiors and atmospheres, researchers have clarified the chemical history of several known exoplanetary s...
Read article 21. 6. 2026Super-puffs are a class of exoplanets characterized by sub-Saturn masses and extremely low bulk densities. Because these planets have such a low density, they are often compared to cotton candy due to their puffy appearance. While some of these planets can be explained by standard core accretion theory—the process where planets form through the gradual accumulation of dust and gas in a protoplanetary disk—others present a significant challenge to...
Read article 21. 6. 2026Estrellas | ExoplaneThe disk surrounding the star HD 135344B shows clear signs of active planet formation, including complex spiral arms and a gap in the surrounding dust. By tracking these features over a ten-year period using various telescopes, researchers have identified a consistent orbital motion that links the spiral structures, a central dust gap, and a mysterious twist in the disk. This evidence suggests that a single, yet-to-be-seen protoplanet is likely r...
Read article 21. 6. 2026EstreDeuterium is a heavier version of hydrogen that is typically destroyed by nuclear fusion in the interiors of stars. Because of this, it is not expected to appear in the light emitted from a star's surface, or photosphere. However, early-type stars, which include B, A, and F-type categories, have outer layers that mix slowly. This property might allow recently accreted material containing deuterium to survive long enough to be detected in spectral...
Read article 20. 6. 2026Estrellas | ExoplanePhotochemical haze—tiny solid particles formed by chemical reactions triggered by starlight—plays a critical role in shaping the appearance and environment of exoplanetary atmospheres. A new 3D model was applied to the well-studied exoplanet HD 189733b to understand how these particles form, move, and affect the planet's overall temperature and light-blocking properties over time.
The simulation used a microphysical scheme coupled with a gener...
Read article 20. 6. 2026Estrellas | ExoplaneThe internal state and atmospheric composition of rocky planets are heavily dictated by the exchange of gases between a molten mantle and the air above it. For planets orbiting very close to their stars, this process can continue for billions of years. A new analysis of the super-Earth Gliese 1132 b examines how the oxidation state of a planet's interior—specifically how oxygen availability affects the melting point of rocks—changes how these wor...
Read article 20. 6. 2026Estrellas | Estrellas masivas de la secuencia princiHD 48914, also known as V505 Mon, is an eclipsing binary star system consisting of a Be-shell star—a star surrounded by a shell of gas—and a companion star that has lost much of its outer material. This system demonstrates high-speed rotation and complex interactions between the two stars. By combining new observations from the TESS space mission with existing photometric data—measurements of light brightness over time—and radial velocity data, t...
Read article 20. 6. 2026Estrellas | ExoplaneGliese 367 b is an ultra-short-period planet that orbits its host, a Red dwarf star, in just 7.7 hours. Because it is located only about 9 parsecs (roughly 29 light-years) from Earth, it has been a target for intense study. Previous research suggested the planet possessed an extremely high density, implying it might be composed almost entirely of solid iron, a finding that challenged standard models of how planets form. New, high-precision measur...
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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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