Editor’s note: The National Academy’s Committee on Astrobiology and Planetary Sciences Autumn 2026 Meeting is being held 6-8 October Tuesday – Thursday this week. According to the agenda there are a ...

GA] Sulfur (S) chemistry in the interstellar medium remains poorly constrained due to the longstanding “missing sulfur” ...

Comets can supply volatile and prebiotic material to rocky planets, but survival of fragile molecules depends on atmospheric entry and impact.

Chondrule sizes are an important discriminant of chondrite groups and chondrule formation theories. Yet most studies report ...

It is widely accepted that water vapor forms clouds by heterogeneous nucleation (condensation on pre-existing dry nuclei).

GA] Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the interstellar medium and are among its smallest carbonaceous ...

This HiRISE image shows light-toned layered deposits within Iani Chaos. Many of the same deposits occur within the ...

Studies suggest that protoplanetary disks around stars with high carbon-to-oxygen (C/O) ratios can produce terrestrial planets ...

GA] Sulfur is the tenth most abundant element in space, yet it is strongly depleted in the gas phase of dense interstellar ...

ACS Earth Space Chemistry] Although energetic and nonenergetic processing of interstellar dust grain surfaces and ice is thought to be one of the dominant mechanisms for the extraterrestrial synthesis ...

Pre-stellar cores are the sites of the earliest stages of star formation. Dust continuum observations are often used to identify and characterise their properties yet only a small fraction of them ...

Mars-sized object called Theia smashed into the infant Earth, vapourising massive amounts of rock and blasting it into space ...