Cygnus Loop

Veil Nebula
Image from Hubble Space Telescope
The Veil Nebula, part of the Cygnus Loop supernova remnant

The Cygnus Loop is a supernova remnant in the constellation Cygnus, about 1470 light years from Sol. The supernova exploded about 16,600 years ago (approximately 6000 BT) and is still expanding, forming a cloud of gas. The nebula is almost spherical, with some bright filaments. The region has long been colonized by a number of exotic clades.

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Development Notes
Text by M. Alan Kazlev
Initially published on 24 September 2001.