NASA presentations at a National Academies of Science on Tuesday left the panel confused and concerned about what NASA plans ...

EP] Previous ALMA observations have revealed unexpectedly strong and rapid variations in Titan’s high-altitude equatorial zonal winds, which present a challenge to our understanding of this moon’s ...

The sub-Neptunes orbiting M dwarfs are usually assigned to one of two classes: rocky cores beneath primordial hydrogen, or ...

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

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

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 ...

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

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

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

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 ...