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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"
IC 2944: The Running Chicken Nebula
20/04/2020
The Horsehead Nebula in Infrared from Hubble
12/04/2020
NGC 1672: Barred Spiral Galaxy from Hubble
06/04/2020
Venus and the Sisters
04/04/2020
A 212-Hour Exposure of Orion
29/03/2020
Star Forming Region S106
25/03/2020
From the Pleiades to the Eridanus Loop
23/03/2020
Wide Field: Fox Fur, Unicorn, and Christmas Tree
10/03/2020
Wolf-Rayet Star 124: Stellar Wind Machine
08/03/2020
Pic du Midi Panorama
07/03/2020
The Light, the Dark, and the Dusty
05/03/2020
Sharpless-308: The Dolphin Nebula
02/03/2020
Two Hemisphere Night Sky
27/02/2020
LDN 1622: Dark Nebula in Orion
21/02/2020
Orion over the Central Bohemian Highlands
18/02/2020
NGC 2392: Double-Shelled Planetary Nebula
16/02/2020
Carina Nebula Close Up
15/02/2020
Spitzer's Trifid
13/02/2020
Cosmic Clouds in the Unicorn
08/02/2020
NGC 7331 Close Up
07/02/2020
A Sunset Night Sky over the Grand Canyon
04/02/2020
Star Formation in the Tadpole Nebula
28/01/2020
The Hyades Star Cluster
22/01/2020
M1: The Incredible Expanding Crab Nebula
Video
19/01/2020
Stars and Dust in Corona Australis
12/01/2020
IC 405: The Flaming Star Nebula
07/01/2020
Messier 20 and 21
30/12/2019
The Northern Winter Hexagon
26/12/2019
The Horsehead Nebula
17/12/2019
Decorating the Sky
12/12/2019