“Single” pulsating subdwarf AQ Col may not be flying solo after all — radial velocity and photometric observations suggest that the star has two white dwarf or neutron star companions.

A team presents a feasibility study of a ring-skimming spacecraft that could characterize Saturn’s rings and inner moons, opening up opportunities to study the formation of the inner Saturnian system.

New observations of an ultra-hot Jupiter provide useful constraints on atmospheric models of planets that orbit so close to their parent stars that they have a permanent scorching day side and cooler night side.

Modeling of shocks observed by spacecraft suggests that high-energy electrons tend to be accelerated by the shock itself, while low-energy electrons are accelerated by a mixture of processes centered on the solar flare.

Irradiating silicon- and carbon-rich dust grains with X-rays shows that these grains are likely destroyed on timescales of a few million years on the surfaces of protoplanetary disks, but could survive far longer in the disk midplane.

A new survey uses a 100-meter radio telescope to measure the ammonia emission arising from 97 dense gas clumps in order to characterize the physical properties of these potential sites of star formation.