The combined powers of two neutrino detectors could give early warning of the impending explosion of a 15-solar-mass star at 1,670 light-years, with a false alarm rate of one per century.

Modeling shows that coronae — the tenuous plasma structures associated with accreting compact objects — have the potential to contribute a significant number of the galaxy’s cosmic rays.

Simulations show that lava planets with and without clouds have discernibly different spectra, but the ability to discern this difference may be beyond the limits of current instruments.

A deep dive into the Sun’s rotation reveals that the rotational parameters may depend on the phase of the solar cycle, potentially related to the appearance of magnetic structures.

Observations of a particular magnetar — a strongly magnetized neutron star — suggest that the pulsed radio emission sometimes seen from magnetars arises from the outer magnetosphere.

An X-ray shell with a likely age of 20–30 thousand years has been discovered around a compact object; the progenitor star was likely more than 25 times the mass of the Sun.