Recent measurements show that the 20-year-long decay of the cyclotron line energy of Her X-1 — an X-ray binary pulsar system — has stopped, and the cyclotron line energy is now stable.

In September 2022, the Juno spacecraft made the first close pass of Europa since 2000; no major surface changes were detected, but the new images allowed researchers to study true polar wander.

JWST images of nearby spiral galaxies give researchers the opportunity to identify and study star clusters, such as the globular clusters that likely represent the oldest stellar populations in these galaxies.

The collision between high-speed solar wind streams and coronal mass ejections can cause geomagnetic storms, often with signatures very different from the typical storms from interacting solar wind streams.

X-ray polarization measurements provide a way to estimate the spins of accreting stellar-mass black holes that is independent of other estimation methods.

Thick disks of stars may make up anywhere from a few percent to 100% of the mass of galactic disks, with the proportion likely depending on the galaxy’s star formation and merger history.