General-relativistic magnetohydrodynamic simulations show how plasmoids — coherent packets of plasma and magnetic fields — mediate the reconfiguration of magnetic fields around an accreting black hole.

Three-dimensional particle-in-cell simulations show that the plasma void that forms behind the Moon as the solar wind rushes past it responds dynamically to the passage of coronal mass ejections.

A newly discovered extremely metal-poor RR Lyrae star — a type of low-mass pulsating variable star — may facilitate future investigations of early star formation in the inner regions of the Milky Way.

Deep imaging finds no evidence of planets around the white dwarf Sirius B, but the search demonstrates the value of using this technique to characterize potential planetary systems around white dwarfs.

The first systematic search for protostar outbursts in one of the most active star-forming regions in the Milky Way finds that protostars undergo outbursts for at least 9 years every 438 years.

Observations in the direction of O-type star Zeta Ophiuchus reveal three different dust populations at varying distances, one of which is highly polarized and may be associated with prominent stripes seen in the infrared.