Using data from the Gaia spacecraft, researchers reassess the importance of extended stellar filaments in the Milky Way, finding that all of these purported structures are gravitationally unbound.

Spectroscopic follow-up of low-metallicity star candidates yields a wealth of metal-poor stars; roughly 92% of the stars in the sample have iron abundances more than an order of magnitude lower than the Sun.

Laboratory experiments involving simulated Martian soil suggest that the fine dust found in Mars’s atmosphere can be produced by individual sand grains bouncing across the planet’s surface.

Particle-in-cell and magnetohydrodynamic simulations provide a way to understand the physical processes at play when a shock interacts with a dense clump of plasma — a potential way to accelerate cosmic rays.

A theoretical framework for a series of laboratory experiments would leverage existing high-power lasers to study supersonic radiation-dominated waves relevant to high-energy astrophysical systems.

Searches for light black holes — those with masses of 1–2 solar masses — may provide a way to support or dismiss the existence of primordial black holes in the asteroid–Moon mass range in dark matter halos.