Wisps of the Veil Nebula.

Wisps like this are all that remain visible of a Milky Way star. About 9,000 years ago that star exploded in a supernova leaving the Veil Nebula , also known as the Cygnus Loop. At the time, the expanding cloud was likely as bright as a crescent Moon , remaining visible for weeks to people living at the dawn of recorded history . Today, the resulting supernova remnant has faded and is now visible only through a small telescope directed toward the constellation of the Swan ( Cygnus ). The remaining Veil Nebula is physically huge, however, and even though it lies about 1,400 light-years distant, it covers over five times the size of the full Moon . In images like this of the complete Veil Nebula , studious readers should be able to identify several of the individual filaments. A bright wisp at the right is known as the Witch's Broom Nebula .