Wikipedia contributors. (2023, June 13). NGC 3242. In Wikipedia, The Free Encyclopedia. Retrieved 22:27, March 2, 2025, from https://en.wikipedia.org/w/index.php?title=NGC_3242&oldid=1159963669
In spiral galaxies, open clusters are largely found in the spiral arms where gas densities are highest and so most star formation occurs, and clusters usually disperse before they have had time to travel beyond their spiral arm.
NGC 3242 (Wikipedia) NGC 3242 (also known as the Ghost of Jupiter, Eye Nebula or Caldwell 59) is a planetary nebula located in the constellation Hydra.