New work shows that the population of novae in the Milky Way and in Andromeda are similar and, despite some expectations to the contrary, are unlikely to be good extragalactic distance indicators.

Though black holes themselves don’t emit light, material trapped in orbit around them certainly can; new theoretical work shows how a black hole could be accompanied by pulsed emission like a pulsar.

Modeling of the fourth candidate on-axis jetted tidal disruption event has yielded important insights into the nature of relativistic jets in tidal disruption events as well as gamma-ray bursts.

Differing widths of spectral features in observations of the solar corona suggest the dominance of heating by waves in open-field structures and localized heating in closed-field structures.

What’s behind the reddish areas on the Moon? Researchers have identified a new domed feature on the Moon’s surface that shows that silicon-rich volcanism is more widespread than previously thought.

The Solar Energetic Particle (SEP) instrument detected low-energy gamma-ray photons and secondary charged particles that were generated when gamma-ray photons interacted with the spacecraft material.