Is this galaxy about to be eaten by a Cosmic Monster ?
Actually no. CG4 is a ruptured Cometary Globule 1300 light years away in Puppis.
Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. This globule is unusual as the head has ruptured.
The galaxy PGC 21338 is located 145 million light years away, a bit too far for the Cometary Globule to reach.
Imaged in LRGB on our Planewave CDK 1000 at Observatorio El Sauce, Chile.
Image Processing: Mike Selby and Mark Hanson.