![Atmospheric energy deposition profiles of GCRs and SEPs in the atmosphere of K2-18b for different magnetic field strengths. The profiles have been smoothed to improve visual clarity. For visibility, the deposited energy corresponding to B=300 µT has been multiplied by a factor of 10. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Energy-.png?resize=1200%2C718&ssl=1)
[astro-ph.EP] Cosmic rays can significantly alter the abundances of certain species in the upper layers of planetary atmospheres, especially in terms of their biosignatures. To fully understand the extent of […]
exoplanet
Posted inExoplanets, -moons, -comets
What The Solar System Can Teach Us About Rocky Exoplanets
[astro-ph.EP] The number of rocky extrasolar planets being discovered continues to increase, but so too does the apparent diversity of such worlds.
Posted inExoplanets, -moons, -comets
Youngest Exoplanet Yet Discovered Found Hiding in Keck Observatory Data
[W.M.Keck Observatory] Astronomers have confirmed the youngest exoplanet detected so far, offering a rare glimpse into the earliest stages of planetary formation. The planet, known as Elias 2-24 b, is […]
Posted inBrown Dwarfs
Decoding The Weather On Brown Dwarf SIMP 0136
[Trinity College Dublin] Scientists from Trinity College Dublin have developed a powerful way to unravel the changing weather patterns on distant worlds.
Posted inOrigin & Evolution of Life
The Abiotic Background: Challenges and Opportunities in the Search for Evidence of Life Beyond Earth
[Astrobiology (Journal) via PubMed]. The “Exploring the Abiotic Background for Life Detection“ workshop was convened between March 31, 2025, and April 3, 2025, at the Carnegie Institution for Science in […]
![Schematic of the hierarchical configuration of the KOI-1623 system (not to scale) -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Rescuing.png?resize=1200%2C720&ssl=1)
Posted inUncategorized
Rescuing Kepler’s False Positives: A Possible Habitable Zone Exoplanet in the Triple Star System KOI-1623
[astro-ph.EP] The Kepler mission has significantly advanced our understanding of exoplanet demographics.
![Overview of the gas-phase oxygen and carbon chemistry in hydrogen-dominated planetary atmospheres.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/The-atomic.png?resize=1200%2C719&ssl=1)
Posted inExoplanets, -moons, -comets
The Atomic C/O Ratio Of Exoplanet KELT-9b
[astro-ph.EP] The carbon-to-oxygen (C/O) ratio of a giant planet’s atmosphere has long been theorised to hold compositional information that can be traced back to its formation history.
Posted inAstronomy & Telescopes
Photonic Integrated Circuits for the Habitable Worlds Observatory: Science Drivers, Material Platforms, Arrayed-Waveguide Spectrographs, and a Space-Qualification Roadmap
[astro-ph.IM] NASA’s Habitable Worlds Observatory (HWO) will require ultraviolet, optical, and near-infrared instruments that are simultaneously compact, mechanically and thermally stable, high-throughput, and replicable at large channel counts.
![Illustration of the astro-calibration method. The four reference frames are represented. The three models (s, a, and c) that link them and constitute the parameter vector x are also represented. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Calibrations.png?resize=1200%2C714&ssl=1)
Posted inAstronomy & Telescopes
Calibrations For High Precision Differential Astrometry Onboard Theia And HWO
[astro-ph.IM] Future space astrometry missions such as Theia and an astrometric mode of the Habitable Worlds Observatory (HWO) require detector calibration and instrumental characterization at an unprecedented level to achieve […]
Posted inPLATO
Detecting Transiting Exoplanets In Simulated PLATO data: A Comparison Of Light Curve Filter And Transit Search Algorithms
[astro-ph.EP] Aims: Our goal is to test and compare transit search methodologies, and provide recommendations as to the best practices to be implemented by the upcoming ESA PLATO mission, in […]