SN 2021adxl is a luminous Type IIn supernova interacting with a dense circumstellar medium in a low-metallicity environment, providing insights into the evolution and death of massive stars.
The multi-wavelength study of supernova PS1-11aop reveals a complex circumstellar medium, suggesting distinct mass-loss events in the star's recent history: a dense, confined shell ejected in the last 10-100 years and a sparser environment indicative of earlier mass loss.