Welcome back to Messier Monday! Today, we continue in our tribute to our dear friend, Tammy Plotner, by looking at the approaching spiral galaxy known as Messier 90! During the 18th century, famed French astronomer Charles Messier noticed the presence of several “nebulous objects”  while surveying the night sky. Originally mistaking these objects for comets, … Continue reading Messier 90 – the NGC 4569 Spiral Galaxy