A large mass of gas fell into the lenticular galaxy NGC 3593 about 2 billion years ago, and this gas both changed the appearance of the galaxy and also created new stars that now orbit the galaxy in the opposite direction from the older stars.

Object 83: Number 1 in 1970

George's Random Astronomical Object is a biweekly astronomy podcast featuring science discussions about astronomical objects at randomly selected locations in the sky.  The wide range of topics discussed in the show include stars, variable stars, variable variable stars, supermassive black holes, ultracool dwarf stars, exoplanets, howler monkeys, infrared radiation, acronyms, more acronyms, starbursts, measurements of less than 12 parsecs, jellyfish galaxies, diffuse ionized gas, and general overall weirdness.