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Researchers have conducted the first high-resolution atmospheric study of the hot gas giant WASP-13 b. By observing four transits, the team refined the orbital geometry of this inflated planet and searched for chemical signatures in its atmosphere. While the study did not detect distinct molecular absorption, it provides important evidence that high-altitude clouds likely obscure the planet's atmospheric features....

Researchers have identified a new protoplanet candidate, EK Chamaeleontis b (EK Cha b), orbiting a young red dwarf star known as EK Cha. This discovery, made using data from multiple high-resolution telescopes, reveals key signs of an object still in its formative stages, including its own potential disk of gas and dust. This finding helps bridge a gap in our knowledge of how giant planets form around smaller, cool stars....

Researchers have identified gaseous silicon monoxide and silicate clouds in the atmospheres of three benchmark early L-dwarf companions, HD 89744 B, Gliese 1048 B, and LSPM J0632+5053 B. By analyzing data from the James Webb Space Telescope, the team tracked how silicon transitions from a gas into mineral grains to form clouds, providing a clearer picture of atmospheric processes in these cool, star-like objects....

Researchers have analyzed the atmosphere of the extreme exoplanet LTT 9779 b, an ultrahot Neptune. By using high-resolution spectroscopy, they identified water vapor on the planet's dayside and found no signs of strong atmospheric escape. The data suggest the planet does not have a thermal inversion, meaning its temperature decreases normally with altitude, and align with expectations of a tidally locked world....

Researchers have confirmed the existence and orbital properties of TOI-6649 b, a hot Jupiter orbiting its host star. By using data from the TESS space telescope combined with ground-based radial velocity measurements, the study provides a detailed profile of this gas giant. The findings contribute to a larger set of planetary systems characterized through the SOPHIE and TESS follow-up program....

Researchers have identified a new exoplanet candidate, PALTA-1 b, orbiting an ultracool dwarf star located approximately 55 light-years away. By monitoring the star's precise position over eight years, the team detected subtle wobbles indicating the presence of a sub-Jupiter mass companion. This finding adds to the rare population of giant planets discovered around small, low-temperature stars....

Observations of the L3.5 dwarf LSPM J0036+1821 (also 2MASS 0036+1821) reveal persistent radio auroras similar to those found on Jupiter. By combining radio and optical data over four years, researchers confirmed a rotation period of approximately 3.08 hours and identified complex magnetic processes driven by electron interactions within the star's magnetosphere, shedding light on the magnetic activity of ultracool dwarfs....

The three-planet system orbiting the young orange dwarf K2-233 shows signs of dramatic atmospheric change. New analysis of radial velocity data confirms that these worlds are undergoing significant mass loss, with planet K2-233 d expected to shrink into either a thin-envelope sub-Neptune or a bare super-Earth over billions of years. Meanwhile, the inner planets K2-233 b and c are likely dominated by iron cores....

Observations of the ultra-hot Jupiter WASP-76 b show evidence of magnesium escaping from its upper atmosphere. By analyzing near-ultraviolet light, researchers identified high-altitude gas extending beyond the planet's gravitational influence. This finding, consistent with hydrodynamic escape, indicates that the planet is losing mass without requiring unusual chemical compositions....