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White Dwarf
The dense, hot core left behind after a low- or intermediate-mass star expels its outer layers. White dwarfs are composed mostly of electron-degenerate matter and no longer undergo fusion.
Source: chandra.harvard.edu
APODs including "White Dwarf"
IC 4406: A Seemingly Square Nebula
16/04/2000
Accretion Disk Binary System
19/12/1999
A Nova In Aquila
15/12/1999
The Rotten Egg Planetary Nebula
01/11/1999
Phi Persei: Double Star
02/10/1999
Halos Around the Ring Nebula
22/09/1999
The Incredible Expanding Cat's Eye
16/09/1999
Symbiotic Star Bubbles
31/08/1999
NGC 2440: Cocoon of a New White Dwarf
03/07/1999
Shells in the Egg Nebula
26/06/1999
PKS285-02: A Young Planetary Nebula
22/06/1999
Introducing Nova Velorum 1999
24/05/1999
Star Wars in NGC 664
15/05/1999
M2-9: Wings of a Butterfly Nebula
21/03/1999
Telescope with Lightning
19/01/1999
M2-9: Wings of a Butterfly Nebula
27/12/1998
Nebulae For Christmas
25/12/1998
Resolving Mira
11/10/1998
Shapley 1: An Annular Planetary Nebula
09/08/1998
The Firework Nebula
04/07/1998
NGC 6302: The Butterfly Nebula
02/06/1998
NGC 6369: A Donut Shaped Nebula
18/05/1998
IC 4406: A Seemingly Square Nebula
27/04/1998
NGC 2440: Cocoon of a New White Dwarf
26/04/1998
Star Wars in NGC 664
18/04/1998
NGC 1818: Pick A Star
15/04/1998
Hen-1357: New Born Nebula
03/04/1998
M27: The Dumbbell Nebula
18/02/1998
The Hubble 5 Planetary Nebula
19/01/1998
The Red Spider Planetary Nebula
06/01/1998