Above: Discovered on May 19, 2023 by Japanese astronomer Koichi Itagaki, SN 2023ixf (the bright star at lower left) lies 21 million light-years away in the Pinwheel Galaxy.
Inconsistencies in the WBVR catalog magnitudes adopted in the Variable Star Database were causing issues for our observers. A major clean-up was in order. | By Sebastián Otero & Tim Lyster
Exactly a century ago, on the night of October 5/6, 1923, Edwin Hubble’s photographic observations of a Cepheid variable settled the vexing question of the day: Our Milky Way is not the entire universe.