Ever seen the Veil-nebula or the Barnards loop? These are evidence of an ancient explosion of galactic proportions.

Part of the Veil-nebula. 4x180sec with Canon 20D on Telvue 4" APO, ISO 800.

Part of the Veil-nebula. 4x90sec with Canon 20D on Vixen R200SS, ISO 800.

The "Crab-nebula", Messier 1, in Taurus. 3x300 sec, with 20D on Vixen R200SS.