http://cssa.stanford.edu/~marcos/sne.html

Supernova Research Pages

http://www.mrao.cam.ac.uk/surveys/snrs/

Catalogue of Galactic Supernova Remnants

http://heasarc.gsfc.nasa.gov/docs/heasarc/missions/exosat.html

European X-ray Observatory

http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula/Supernova.html

Supernova Remnants

http://www.ncsa.uiuc.edu/Cyberia/Expo/Theater_Img/NumRel.html

Movies from the Edge of Spacetime

http://jean-luc.ncsa.uiuc.edu/

The International Numerical Relativity Group

http://cfa-www.harvard.edu/cfa/ps/cbat.html

IAU Circulars

http://www.sdc.asi.it

BeppoSAX Science Data Center White Dwarfs

http://pulsar.princeton.edu/rpr.shtml

Radio Pulsar Resources Black Holes

http://casa.colorado.edu/~ajsh/schw.html

Falling into a Black Hole

http://physics7.berkeley.edu/BHfaq.html

The Black Holes FAQ

http://www.seds.org/messier/

The Messier Catalog

http://www.seds.org/messier/hottest.html

The Hottest Messier Stuff Available

http://seds.lpl.arizona.edu/messier/data.html

Messier Objects, all 103 (+7) of them.

http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula.html

Nebulae: Fuzzy Patches In Space

http://seds.lpl.arizona.edu/billa/twn/top.html

The Web Nebulae