Three-dimensional hydrodynamical modeling of the supernova SN 2014C suggests that the progenitor star lost 2.5 solar masses of material during the period from 5000 to 1000 years before the explosion.
Based on solar observations made since 1975, researchers predict that the current solar cycle — cycle 25 — will experience 2±1 powerful S-type solar flares after the spring of 2027.
Modeling suggests that a 5-centimeter coronagraph deployed at a Sun–Earth Lagrange point would be capable of measuring the orientation of the solar magnetic field in eruptive prominences.
A reanalysis of the radial-velocity data for the star Gliese 229 suggests that the previously reported signals from three exoplanets in orbit around the star are actually due to stellar activity.
Monte Carlo simulations show that the polarization degree and angle of X-ray photons can be determined under a range of conditions by a proposed detector bound for the Tiangong space station.
Theodore Kareta et al 2025 ApJL 979 L8
Spectroscopy reveals that the makeup of Earth’s “mini-Moon” asteroid is similar to that of the Moon rather than other asteroids, likely making this the second near-Earth asteroid through to originate from the Moon.