Discovering exoplanets around giant stars is difficult because these stars are inherently variable, showing slow radial velocity changes that can be mistaken for the tiny tugs of an orbiting planet.
Modeling of Europa’s broken and jumbled chaos terrain supports the idea that there may be shallow reservoirs of salty water embedded within the moon’s thick icy crust.
Researchers are using the positions of young stars to disentangle the spiral structure of our home galaxy, which is key to understanding how our galaxy formed and continues to evolve.
R. Mckinven et al 2023 ApJ 951 82
Multiple years of keeping tabs on a dozen repeating fast radio bursts has revealed that these bursts are more likely to have variable or extreme rotation measures than radio pulsars are.
W. Cerny et al 2023 ApJL 953 L21
A newly discovered ultra-faint star cluster has intriguing but uncertain origins: kinematic data can’t yet tell us whether the cluster belongs to the Milky Way, the Small Magellanic Cloud, or the Large Magellanic Cloud.
Kartick C. Sarkar et al 2023 ApJ 951 36
Low-luminosity jets and winds from supernovae or tidal disruption events are the only remaining explanation for the Fermi/eROSITA bubbles, according to recent research.