Interstellar medium
matter and radiation in the space between the star systems in a galaxy
Rosette Nebula
Necklace Nebula
Rigel
Antares
Messier 78
Gum Nebula
Homunculus Nebula
M1-92
Hen 2-437
Lockman Hole
Crescent Nebula
RS Puppis
K 1-2
Tulip Nebula
Local Bubble
Sh2-239
Toby Jug Nebula
Gum 15
Sh2-68
Carina Nebula
Pelican Nebula
Iris Nebula
2MASX J17122774-2322108
[FSR2007] 1576
GUM 42
2E 166
Boomerang Nebula
Pyxis globular cluster
Ghost Nebula