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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"
M43: Dust, Gas, and Stars in the Orion Nebula
06/07/2020
Lynds Dark Nebula 1251
03/07/2020
Bright Planetary Nebula NGC 7027 from Hubble
30/06/2020
The Tadpoles of IC 410
18/06/2020
NGC 2359: Thor's Helmet
12/06/2020
Orion over Argentine Mountains
09/06/2020
Halo of the Cat's Eye
07/06/2020
The Lively Center of the Lagoon Nebula
01/06/2020
Mystic Mountain Monster being Destroyed
25/05/2020
South of Carina
22/05/2020
Journey into the Cosmic Reef
Video
18/05/2020
The Dark River to Antares
16/05/2020
Behind Betelgeuse
11/05/2020
Carina in Perspective
05/05/2020
Andromeda Island Universe
30/04/2020
Edwin Hubble Discovers the Universe
26/04/2020
Lyrid Meteor Streak
23/04/2020
Eye on the Milky Way
21/04/2020
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