[astro-ph.EP] Titan, a unique body in the solar system, resembles a life-size Miller-Urey experiment where pockets of liquid water might interact with abundant organic matter.
astro-ph.EP
![Graphical Abstract -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Space-Journey-Beyond-Earth.jpg?resize=1200%2C720&ssl=1)
Posted inExoplanets, -moons, -comets
Space Journey Beyond Earth: Exploring The Properties Of Exoplanets And Multi-planetary Systems
[astro-ph.EP]. In contrast to the observed exoplanet diversity, planets within many multi-planetary systems exhibit intra-system similarities in their radii, masses, and orbital spacings.
Posted inExoplanets, -moons, -comets
The NEID Earth Twin Survey. VI. Discovery Of A Low-Mass Planet Orbiting HD 126053 And RV Signals Near The Rotation Periods Of HD 168009 and HD 10780
[astro-ph.EP] Extreme precision radial velocity (EPRV) spectrographs are making strides in extending the limits of radial velocity exoplanet detection.
Posted inLava / magma ocean / Volcanic Worlds
The First Hubble Detection Of A Secondary Eclipse From A Rocky Exoplanet: The 5.4-hour Planet TOI-2431 b
[astro-ph.EP] We present an HST/WFC3 G141 phase-curve observation of the ultra-short-period rocky planet TOI-2431 b and detect its secondary eclipse in the near infrared.
![JWST/NIRSpec data for LRL 11001 using the PRISM disperser (bottom, L24) and G235M/G395M (top, this work). Uncertainties of ±1 σ for the latter are plotted as the pink band. The continuum near the 3.4 µm band has S/N∼30.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/JWST-detection.png?resize=1200%2C720&ssl=1)
Posted inBrown Dwarfs
JWST Detection Of Methane Emission From A Young Brown Dwarf
[astro-ph.EP] In recent studies, we have used low-resolution spectroscopy (R~100) with the James Webb Space Telescope (JWST) to uncover low-mass brown dwarfs (2-10 MJup) in the young cluster IC 348 […]
Posted inLava / magma ocean / Volcanic Worlds
Revealing The Shiny Nature Of Lava Worlds: Small Planet Phase Curves With TESS
[astro-ph.EP] Recent thermal emission observations suggest that `lava worlds’–Earth-sized exoplanets hot enough to melt their silicate surfaces–have atmospheres on a population-level.
![Atmospheric and water loss of an Earth-like planet for three stellar systems: (e,f) M-dwarf (TRAPPIST-1) central habitable zone. The mass losses shown in a,b,c and d are after 6 Gyr of system integration. -- Full chart below [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Simulated-Effects.png?resize=1200%2C718&ssl=1)
Posted inExoplanets, -moons, -comets
Simulated Effects of Radioactive Elements on Magnetic Evolution and Atmospheric Mass Loss of Earth-like Planets
[astro-ph.EP] Thousands of exoplanets have been discovered in recent decades, yet Earth remains the only known world with life.
![Stellar age versus planet radius for all planets in the Mission Candidate Sample. Planets younger than 200 Myr are highlighted in blue. The four planets marked with a star represent promising young targets. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Probing.png?resize=1200%2C717&ssl=1)
Posted inAriel Mission
Probing Exoplanetary Chemistry with Ariel: Scientific Priorities and Observational Strategies
[astro-ph.EP] Over the past two decades, increasingly precise observations have revealed that exoplanet atmospheres are chemically diverse and often far from equilibrium, with processes such as vertical mixing, photochemistry, and […]
![Observed lightcurve of Atira in 𝑉 and 𝑅𝐶 bands. A scaling of +0.43 mag is applied to all 𝑅𝐶 magnitudes. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Nordic-based.png?resize=1200%2C720&ssl=1)
Posted inComets and Asteroids
Nordic-based Observations Of Binary Asteroid (163693) Atira Reveal A Hydrated CM Chondrite Composition
[astro-ph.EP] We present photometric, spectroscopic, and polarimetric observations of (163693) Atira collected on the night of 05 March 2024. A dual-band lightcurve acquired in the V and R_C filters using […]
Posted inBrown Dwarfs
Water Cloud and Chemical Modulations in the Coldest Brown Dwarf
[astro-ph.EP] We present high signal-to-noise, medium resolution (R ~ 1000), time-series JWST/NIRSpec spectra of WISE 0855 (265K), the coldest known brown dwarf.