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Nebula
A nebula is a giant cloud of gas (mostly hydrogen and helium) and cosmic dust situated between stars in the interstellar medium. Nebulae serve as sites of stellar birth and death—including emission nebulae that glow from ionized gas, reflection nebulae that scatter starlight, and dark nebulae that obscure background stars.
Source: science.nasa.gov
APODs including "Nebula"
A Cosmic Rose: The Rosette Nebula in Monoceros
12/04/2019
A Scorpius Sky Spectacular
07/04/2019
Messier 2
04/04/2019
Wisps Surrounding the Horsehead Nebula
03/04/2019
NGC 1333: Stellar Nursery in Perseus
27/03/2019
AE Aurigae and the Flaming Star Nebula
26/03/2019
Horsehead and Orion Nebulas
18/03/2019
NGC 3324 in Carina
16/03/2019
A View Toward M101
15/03/2019
Stardust and Starlight in M78
08/03/2019
Sharpless 249 and the Jellyfish Nebula
07/03/2019
The Orion Bullets
03/03/2019
NGC 6302: The Butterfly Nebula
02/03/2019
A Charioteer's Comet
01/03/2019
Magnetic Orion
27/02/2019
The Stars of the Triangulum Galaxy
23/02/2019
Reflections on vdB 9
21/02/2019
Doomed Star Eta Carinae
20/02/2019
NGC 2359: Thor's Helmet
16/02/2019
The Helix Nebula in Hydrogen and Oxygen
13/02/2019
Moon, Four Planets, and Emu
08/02/2019
Fox Fur, Unicorn, and Christmas Tree
07/02/2019
Henize 70: A Superbubble in the LMC
04/02/2019
LDN 1622: Dark Nebula in Orion
02/02/2019
Sharpless 308: Star Bubble
31/01/2019
Orion over the Austrian Alps
23/01/2019
The Heart and Soul Nebulas
15/01/2019
Meteor and Milky Way over the Alps
14/01/2019
Tycho's Supernova Remnant in X-ray
13/01/2019
Milky Way Falls
12/01/2019