[Kyushu University] Planetary systems like our solar system are born within a disk of gas and dust (protoplanetary disk) surrounding a newly formed star. Observations with the ALMA telescope have […]
Astrogeology
Posted inExoplanets, -moons, -comets
Capture of Interstellar Planetesimals in Protoplanetary Discs in Binary Star Systems
[astro-ph.EP] Planet formation requires growth over 12 orders of magnitude in size, from micron-sized dust grains to fully formed planets.
Posted inAtmospheres, Climate, Weather
Excess Oxygen Stored In Deep Earth Magma May Help Explain How Earth’s Atmosphere Became Oxygen-rich
[Science China Press] The research team, led by Dr. Yanhao Lin and Dr. Ho-kwang Mao of the Center for High Pressure Science and Technology Advanced Research (HPSTAR), together with Prof. […]
![[LEFT] Extended Seasonal evolution of total atmospheric optical depth across 669 Sol (a) Total atmospheric optical depth for the control simulation (b) Total atmospheric optical depth under singleinjection aluminium nanoparticle substitution (c) Total optical-depth anomaly between the seeded and control simulations, showing the temporal evolution of the radiative effect associated with the aerosol substitution Extended [RIGHT]] Seasonal evolution of aerosol optical depth across 669 Sol (a) Aerosol optical depth for the control simulation, showing the spatial and temporal distribution of the background aerosol (b) Aerosol optical depth under single-injection aluminium nanoparticle substitution (c) Aerosol optical-depth anomaly between the seeded and control simulations, showing the evolution and decay of the aerosol optical signal in the absence of continuous replenishment. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/3D-Global.png?resize=1200%2C714&ssl=1)
Posted inTerraforming & Geoengineering
3D Global Climate Simulations of Synthetic Mars Warming
[astro-ph.EP] Artificial warming via engineered aerosols presents a novel pathway to bypass volatile scarcity on modern Mars.
Posted inAstronomy & Telescopes
ALMA Reveals Planetary Formation Structures In Small Disks
[ALMA] Thanks to the extraordinary sharpness of ALMA’s images, a research team has discovered rings, grooves, and cavities in extremely compact disks surrounding young stars.
Posted inAtmospheres, Climate, Weather
Simulations Of The Evolving Ozone Layer: Implications For The Early Earth, Exoplanets, And The Search For Life
[astro-ph.EP] Over 4 billion years, Earth’s atmosphere has been transformed from a composition devoid of molecular oxygen (O2) to one where O2 is now 21% of our modern atmosphere by […]
Posted inMars
A Proposal To Make Mars Sample Return A Collaborative NASA, ESA, And CNSA Effort
[Astrobiology (Journal) via PubMed] Humanity’s self-awareness drives the quest to understand the origins of life. Although Earth history has erased much of our planet’s early biological evidence, Mars preserves ancient […]
![Planetary Research Program Metrics to Enable a Vital Research Community and Achieve Decadal-Level Science -- [National Academies of Sciences]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Planetary-1.png?resize=1200%2C720&ssl=1)
Posted inReports, Roadmaps, & Plans
Planetary Research Program Metrics to Enable a Vital Research Community and Achieve Decadal-Level Science
[National Academies of Sciences] Help us identify ways that the NASA Planetary Research Program can evaluate the health and effectiveness of its research and analysis program in accomplishing decadal science […]
![Latitude-longitude maps of mean water vapour and hydrogen chloride volume mixing ratios and coefficient of variation (standard deviation divided by the mean) in percentage form at 20.91 km altitude. The values are calculated over four Venus solar days (468 Earth days). --[astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/How-long.png?resize=1200%2C717&ssl=1)
Posted inVenus
How Long Could Volcanic Plumes Persist In The Venus Atmosphere?
[astro-ph.EP] Resolving the ambiguity surrounding current Venusian volcanism is a primary objective for upcoming missions like EnVision and VERITAS.
Posted inExoplanets, -moons, -comets
“Mega-Earths” Are Likely An Artifact Of Stellar Activity
[astro-ph.EP]. Empirical relations and planet formation simulations suggest an upper mass limit for rocky planets of ∼10M⊕, as cores above this will almost certainly undergo runaway gas accretion.