Cygnus Loop and Location of Veil Nebula
[Left] – This is a sky survey image of the Veil Nebula, a 110-light-year-wide expanding remnant of a star that exploded about 8,000 years ago in the constellation Cygnus.
[Center] – This is a ground-based telescope image of a 15-light-year-long stretch of the eastern portion of the nebula.
[Right] – This image shows a two-light-year-wide segment of the remnant as photographed by NASA's Hubble Space Telescope. Hubble resolves tangled rope-like filaments of glowing gases.