Microscope images of Ryugu samples collected from the first and second landing sites of the Hayabusa2 mission, respectively. Credit: Jaxa/Jamstec Samples from the asteroid Ryugu collected and returned to Earth

Life-friendly moon — A realistic depiction of a free-floating gas giant planet and its Earth-like moon © Dahlbüdding/DALL-E Liquid water is considered essential for life. Surprisingly, however, stable conditions that

The astrometric and RV signals of Earth analogs orbiting nearby stars are small and below the current state of the art, while the astrometric signals of such planets are positively

ASGSR 2025 The American Society for Gravitational and Space Research (ASGSR) plays an important role in connecting the gravitational and space research community through its annual scientific meeting, advocacy efforts,

Schematic of the two-channel picture. As the atmosphere expands and rarefies, a fraction of particles decouples from the collisional flow and streams outward ballistically. The collisional channel can remain Parker-like