If the streaming instability is responsible for creating 100-km “moonlets” that then coalesce to form the Moon, the disk from which this material originated must have been vapor poor rather than vapor rich.
There are significant differences between multi-armed spiral galaxies and two-armed “grand design” spiral galaxies, including stellar mass, half-light radii, and central bulge properties.
A. F. Marino et al 2024 ApJL 969 L8
Detailed measurements of chemical abundances in the atmospheres of cool, low-mass stars reinforce the theory that star formation in globular clusters proceeds in a series of bursts.
A review of 51 X-ray bursts from a prolific Milky Way magnetar — the source of the first fast radio burst to be associated with an X-ray burst — reveals the object’s spectral evolution.
Solar energetic particles released during solar flares and coronal mass ejections have the potential to seriously harm spacecraft and astronauts; new techniques provide better predictions of the arrival times of these particles.
Three types of neutrino interactions will be investigated at the Jiangmen Underground Neutrino Observatory (JUNO) to detect neutrinos from the production of boron-8 in the Sun’s core.