sterne
exoplaneten
Nachricht
Stellar Brief: 23. 10. 2026
Today’s astronomy highlights reveal a striking contrast on exoplanet WASP-43 b: models indicate that its nightside is largely cloudy, while its dayside appears clear at the level where light emerges. The findings offer a new way to compare the planet’s extreme weather with telescope observations.
Read today's Stellar Brief
Latest astronomy nachricht
18. 3. 2026
Sterne | Exoplaneten | James-Webb-Weltraumteleskop | Planetenatmosphären | Rote ZwergeTOI-5293 A b is a giant planet about half the mass of Jupiter, orbiting an early red dwarf star every three days. The planet’s atmosphere was studied using two transits observed by the James Webb Space Telescope (JWST). The host star’s surface changes rapidly, making it challenging to interpret the data. In the first transit, the planet crossed regions of the star with different brightness, which contaminated the spectrum. The second transit allowed astronomers to model and remove these effects,...
Read article 
Advertisement
17. 3. 2026Sterne | ExoplaneteStudying exoplanet atmospheres with transmission spectroscopy can be complicated by features on the star’s surface, which can affect the observed spectra. To better understand these effects, astronomers analyzed the surface of the star HD 189733 by observing two transits of its planet using the ESPRESSO spectrograph. They used a technique called Doppler shadow analysis to probe how the star’s spectral lines change from the center to the edge (lim...
Read article 17. 3. 2026Sterne | Exoplaneten | ALMA | Planetenentstehu
High-resolution images from the ALMA telescope have revealed a variety of shapes in the dust of planet-forming disks, including rings, spirals, and crescents. While most disks show symmetrical rings, some display asymmetric features like blobs or crescents, which may be linked to vortices or the influence of forming planets. This study focuses on the disk around the star HD 163296, where a crescent-shaped arc was observed in the dust using ALMA d...
Read article 17. 3. 2026Sterne | ExoplaneteA new study has analysed six planetary systems, each with at least one small planet passing in front of its star. By combining new and existing observations from space and ground-based telescopes, researchers have measured the mass and size of these planets with high precision. This allows for a better understanding of what these distant worlds are made of and how they might have formed.
The team used data from CHEOPS, K2, TESS, and several gr...
Read article 17. 3. 2026The TOLIMAN mission is building and preparing to launch a low-cost space telescope with a unique optical design. Its main goal is to search for rocky, Earth-like planets in temperate orbits around the stars Alpha Centauri A and B, the closest Sun-like stars to Earth. Finding such planets is difficult with current instruments, even though these stars are nearby and bright.
TOLIMAN will use a technique called narrow-angle astrometry, which measu...
Read article 17. 3. 2026Sterne | ExoplaneteTOI-3884 b is a rare super-Neptune planet that transits a fully convective M-dwarf star with a persistent giant polar starspot. Because the planet passes over this spot during every transit, astronomers can directly study the spot’s properties using the James Webb Space Telescope (JWST). Seven transits were observed with JWST, covering a wide range of wavelengths from 0.5 to 5.3 micrometers.
Each transit showed a recurring signature as the pla...
Read article 16. 3. 2026Sterne | ExoplaneteSilicate clouds are a key feature in the atmospheres of many giant exoplanets, but their formation and composition are still being studied. This research compares the silicate clouds seen in four hot Jupiters observed by JWST with theories developed for brown dwarfs, objects that are between planets and stars in mass and temperature. The study also uses evidence from meteorites to show that giant planets forming in the outer regions of protoplane...
Read article 16. 3. 2026Sterne | Exoplaneten | TESS | Rote Zwerge
The Neptunian desert is a region where Neptune-sized planets are rare at short orbital periods, likely due to intense starlight stripping away their atmospheres or changes in their orbits. Understanding this desert helps scientists learn how planets evolve, especially around different types of stars. In this study, astronomers confirmed the existence of TOI-672 b, a massive super-Neptune orbiting a red dwarf star, using data from TESS, ground-bas...
Read article 16. 3. 2026Sterne | ExoplaneteThe exoALMA Large Program has uncovered many detailed structures in the dust and gas of protoplanetary disks, where planets are forming around young stars. By using a technique called tomography—studying how molecular lines change at different locations and velocities—astronomers can now detect the presence of planets hidden within these disks.
The study shows that even with a few hours of ALMA telescope time, it is possible to spot the signat...
Read article 16. 3. 2026Sterne | Exoplaneten | James-Webb-Weltraumteleskop | PlanetenatmosphäreThe James Webb Space Telescope (JWST) has detected silicate clouds in the atmospheres of several exoplanets, providing new insights into how clouds form in extreme environments. While simple models can fit these observations, they do not always match the results from more detailed microphysical models. To address this, researchers developed Nimbus, a fast model that simulates cloud formation based on physical processes, and used it alongside Virg...
Read article Top article categories
Filtered articles by category.
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 | |
| L 115-21 b | 10 / 2026 | 0.4 M⊕ | 41.9 ly | |
| TIC 219893931 b | 09 / 2026 | 8.9 M⊕ | 1319.5 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 |
Newly discovered exoplanets
Latest scientific studies
Durchsuchen Sie die neuesten wissenschaftlichen Studien zu Sternen und Exoplaneten in unserer Galaxie. Entdecken Sie die neuesten Forschungsergebnisse zur Astrophysik und Sternastronomie.
Ältere Veröffentlichungen