into-theuniverse:Open Star Cluster M46Also featuring Planetary Nebulae NGC 2438 (near center) and PK
into-theuniverse:Open Star Cluster M46Also featuring Planetary Nebulae NGC 2438 (near center) and PK231+4.1 (inset). -- source link
into-theuniverse:Open Star Cluster M46Also featuring Planetary Nebulae NGC 2438 (near center) and PK231+4.1 (inset). -- source link