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

26/07/2006

22/07/2006

21/05/2006

07/05/2006

18/04/2006

07/03/2006

24/02/2006

26/12/2005

29/10/2005

28/07/2005

12/06/2005

03/06/2005

01/06/2005

05/05/2005

12/03/2005

23/01/2005

16/01/2005

22/05/2004

13/05/2004

07/02/2004

01/02/2004

11/01/2004

10/11/2003

18/07/2003

12/07/2003

31/05/2003

10/05/2003

09/04/2003

14/03/2003

19/02/2003