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.
Haipeng An et al 2024 ApJ 976 247
Astrometric measurements may offer a way to detect the subtle influence of gravitational waves and theoretical effects like those from ultra-light dark photon dark matter.
S. R. Callos et al 2025 Planet. Sci. J. 6 17
Particle clouds called spokes in the outer parts of Saturn’s rings show a variety of intriguing behaviors, including seasonal variations and switching from appearing darker and lighter than the ring material.
Twenty years of observations show a consistently hot temperature for the plasma surrounding HL Tau, similar to what is seen for other protostars in the same evolutionary stage.
Simulations show that high-speed plasma jets can arise in the the magnetosphere of Mercury, though they are smaller and less common on Mercury than they are on Earth.