Analysis of 10 nights of observations of Europa’s auroral emission suggests that optical auroral brightness may be a proxy for electron density variations, assuming a stable atmospheric composition and density.
Magnetothermal modeling suggests that neutron stars may remain “silent” at radio frequencies for approximately 100,000 years before activating, potentially as long-period radio transients.
A newly discovered massive giant planet likely has a retrograde orbit relative to the other known planet in the system, pointing to a potentially violent dynamical history.
The galactic center star IRS 9 is locally unbound and was likely placed on its current trajectory by binary supernova disruption, two-body interactions, or stellar collisions.
Chromospheric and photospheric activity in M dwarfs appear to be correlated, with stellar rotation influencing both types of activity and metallicity impacting the intensity of chromospheric activity.
By cross-matching results from two different search algorithms, researchers have discovered three new Milky Way satellites, two of which appear to be dwarf galaxies and one of which is likely a star cluster.