New radio observations of a binary system containing a pulsar and a massive companion star reveal the interaction between the pulsar wind and the companion star’s wind or disk.

Observations of a changing-look active galactic nucleus appear to be consistent with the tidal disruption of a 1.1-solar-mass star as well as with predictions for a so-called “slim” disk.

Three years into the survey, a 9-Earth-mass exoplanet candidate has been confirmed; unlike many of the other known exoplanets of similar size and orbit, the newly confirmed planet has no known siblings.

Molecular dynamics computations explore how tightly bound certain minerals are to the surfaces of planetary bodies; crystal orientation and other factors affect this value, complicating the investigation.

Simulations show that vortices are capable of creating rings and gaps like those made by planets; however, vortices are significantly more effective at opening gaps than planets are.

Misaligned dusty disks around young binary stars can precess and eventually end up in a polar orbit; future radio arrays may be capable of detecting the centimeter-sized dust grains involved in the resulting “traffic jams.”