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5. 7. 2026
Sterne | Exoplaneten | Gaia | TESS | Orangefarbener ZwerThe Transiting Exoplanet Survey Satellite (TESS) has successfully identified its first gravitationally bound planet through a technique known as microlensing. Microlensing occurs when the gravity of a star and its orbiting planet acts like a magnifying glass, bending and brightening the light of a more distant background star as the system passes in front of it. The newly characterized planet, designated Gaia23bra b, orbits an orange dwarf star.
Initially identified as a simple single-lens ev...
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5. 7. 2026Sterne | Exoplaneten | CHEOPS | Junge SternobjekteThe young V1298 Tau planetary system, estimated to be between 10 and 30 million years old, provides a window into the early stages of planet formation. Recent observations focused on the three innermost planets of the system, refining measurements of their sizes and physical properties to better understand how young worlds develop their atmospheres and internal structures.
Data from the CHEOPS space telescope allowed for high-precision measure...
Read article 2. 7. 2026Sterne | Exoplaneten | TESSTwo giant planets, TOI-791 b and TOI-791 c, have been confirmed orbiting the F7-type star TOI-791. Both planets are similar in size to Jupiter, but they possess exceptionally low densities. They follow long-period orbits, taking approximately 139 days and 232 days respectively to complete a revolution around their host star. The planets are locked in a orbital relationship known as a 5:3 resonance, which causes detectable timing shifts as they pa...
Read article 2. 7. 2026Sterne | ExoplaneteThe ultra-hot Neptune-mass planet LTT 9779 b has been studied through the detection of its reflected starlight. Because planets are much fainter than their host stars, capturing the light they reflect is a significant technical challenge. By observing the system at high spectral resolution, investigators were able to isolate the faint signal of light bouncing off the planet, providing new information about its atmosphere.
The findings were gat...
Read article 2. 7. 2026Sterne | Exoplaneten | TESS | Orangefarbener ZwerThe planetary system TOI-1533 consists of two planets orbiting an active orange dwarf star. Located in a compact arrangement, this system features an inner sub-Neptune planet and an outer, larger hot giant planet. Such systems, where a large gas-rich planet is accompanied by a smaller companion, are rare and provide insight into how planetary systems migrate and evolve over time.
The research reveals that both planets transit, or pass in front...
Read article 2. 7. 2026Sterne | Exoplaneten | James-Webb-Weltraumteleskop | PlanetenatmosphäreThe temperate exo-Neptune TOI-1231 b serves as a vital benchmark for understanding planets smaller than Neptune. Because of its density, the planet is known to possess a deep, hydrogen-rich atmosphere. This study provides the first near-infrared transmission spectrum—a technique that analyzes how starlight filters through a planet's atmosphere—to determine its chemical makeup, offering a reference for similar worlds.
Researchers identified a s...
Read article 2. 7. 2026Sterne | ExoplaneteThe TOI-2134 planetary system contains two confirmed planets orbiting their host star. The inner planet is a mini-Neptune, a gas-rich world smaller than Neptune, while the outer planet is a temperate sub-Saturn. By combining new observations from the TESS space telescope with extensive ground-based velocity measurements, the composition and orbital paths of these planets have been precisely determined, revealing a complex system architecture.
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Read article 28. 6. 2026Sterne | Exoplaneten | Junge Sternobjekte
The young star PDS 70 is known to host two confirmed protoplanets within its disk of gas and dust. Recent observations have identified two elongated dust features near the star, which may indicate the presence of a previously unknown third planet or complex structures within the inner disk. These features share the same orbit, with one leading the other by approximately 120 degrees, suggesting they could be dust trapped by the gravity of an unsee...
Read article 28. 6. 2026Sterne | ExoplaneteKepler-451 is a binary star system hosting a planet that orbits both stars, known as a circumbinary planet. By analyzing the timing of eclipses between the two stars from 2004 to 2024, the study investigated variations in the orbital period. These variations, which appear as shifts in the expected timing of eclipses, provide clues about gravitational influences from additional objects in the system or internal changes within the stars themselves....
Read article 25. 6. 2026SterneLong-period comets, which take thousands of years to orbit the Sun, are traditionally thought to be nudged toward the inner solar system by the gravitational pull of the Milky Way's disk. New evidence suggests that the star HD 7977 may have passed close to our solar system 2.5 million years ago, creating a "comet shower" that continues to influence the number of comets we observe today.
The research compared computer simulations of long-period...
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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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