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25. 9. 2026
Sterne | Exoplaneten | | PlanetenentstehuThe 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 polarized images taken over multiple time periods, the con...
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24. 9. 2026Sterne | Exoplaneten | James-Webb-Weltraumteleskop | TESS | Heißer JupiterTOI-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...
Read article 23. 9. 2026Sterne | James-Webb-Weltraumteleskop | PlanetenentstehuThe innermost regions of the protoplanetary disk surrounding the very-low-mass star 2MASS J16053215-1933159 have been characterized using observations from the James Webb Space Telescope. By comparing data collected in 2022 and 2024, researchers observed significant changes in the amount of light emitted by carbon monoxide gas and other material, suggesting that this small star behaves like a scaled-down version of larger, younger stars known as ...
Read article 22. 9. 2026Sterne | Exoplaneten | Rote Zwerge | PlanetenentstehuGliese 3090 b is a sub-Neptune planet orbiting an inner position within a multi-planet system around a Red dwarf star. Recent observations reveal that this planet moves in a retrograde orbit, meaning it travels in the opposite direction to the rotation of its host star. This configuration is highly unusual for small planets orbiting Red dwarf stars, providing new information about how planetary systems develop and migrate over time.
To determi...
Read article 22. 9. 2026Sterne | Exoplaneten | PlanetenentstehuThe formation of moons around giant planets depends on how these planets pull gas and dust from the surrounding disk. By modeling the young star PDS 70, researchers have investigated how material flows toward the planet PDS 70 c. The results show that large planets act as a filter, significantly changing the amount and size of dust that can actually reach the planet's own miniature disk, known as a circumplanetary disk.
To understand this proc...
Read article 15. 9. 2026Sterne | Exoplaneten | PlanetenatmosphäreGliese 3090 b is a sub-Neptune, a type of planet larger than Earth but smaller than Neptune, orbiting its host star in a tight, short-period orbit. This planet is currently losing its atmosphere into space through a process known as photoevaporation, where intense radiation from the host star heats the upper atmosphere, causing gas to escape. Observations show the planet is in a rapid, transformative phase of its evolutionary history.
Research...
Read article 14. 9. 2026Sterne | Exoplaneten | PlanetenatmosphäreThe exoplanet KELT-9 b is an extremely hot gas giant where temperatures reach 4,000 Kelvin. Because it is so hot, traditional methods for studying its atmosphere using molecules like water or carbon dioxide are difficult, as these compounds break apart into individual atoms due to the intense heat. By analyzing light passing through the planet's atmosphere, researchers have now directly measured the levels of atomic carbon and oxygen to understan...
Read article 13. 9. 2026Exoplaneten | Sterne | Sonnähnliche SterneThe closest Sun-like stars to the Solar System are Alpha Centauri A, Tau Ceti, and 82 G. Eridani. All three are G-type main-sequence stars, broadly similar to the Sun, although they differ in mass, temperature, age, and planetary systems.
Read article Alpha Centauri A — 4.37 light-years
Alpha Centauri A is the closest Sun-like star to the Solar System. It is a G2V star with about 1.1 times the mass of the Sun. Its surface temperature is approxi...12. 9. 2026Sterne | Exoplaneten | James-Webb-Weltraumteleskop | PlanetenatmosphäreThe atmospheric makeup of the warm Neptune-sized planet HD 106315 c has been studied using data from the James Webb Space Telescope. Located around an F-type star, the planet is subject to intense ultraviolet radiation. While researchers expected to find chemical markers related to sulphur, the study revealed a high enrichment of metals in the planet's atmosphere and identified water vapor along with potential traces of ammonia.
By analyzing l...
Read article 12. 9. 2026Sterne | Exoplaneten | James-Webb-WeltraumteleskoA new candidate planet has been identified within the HR 8799 system using direct imaging. If confirmed, this would mark the first time a five-planet system has been directly imaged. The potential planet is estimated to have a mass of a few to several times that of Jupiter and orbits the star at a distance of approximately 7 astronomical units, which is roughly the distance from the Sun to Jupiter in our own solar system.
The object was observ...
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Neu entdeckte Exoplaneten
| 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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