(Phys.org)—A team of astronomers led by Aneurin Evans of the Keele University, U.K., has observed the classical nova V339 Delphini (V339 Del for short) and spotted some peculiar changes in its dust shell. These observations could improve our knowledge about dust formation around stellar remnants. The results of the observational campaign are presented in a paper published Dec. 19 on the arXiv pre-print repository.