An Edge of the Cygnus Loop

 20,000 years ago, a star exploded leaving its remnants to expand into space. The resulting nebula, called the Cygnus Loop, forms a bubble-like shape that is about 120 light-years in diameter. The distance to its center is approximately 2,600 light-years from Earth.

Astronomers used Hubble to examine a very small slice of the leading edge of this expanding supernova bubble, where the supernova blast wave plows into surrounding material in space.This close-up look at a nearly two-light-year-long section shows filaments of glowing hydrogen.

Image Credit: NASA / ESA / STScI

The Veil Nebula

The Veil Nebula is the remnant of the explosion of a massive star thousands of years ago; it is one of the largest and most spectacular supernova remnants in the sky. The nebula is expanding at a velocity of about 1.5 million kilometers per hour. This expansion has been directly observed in images taken by the Hubble Space Telescope between 1997 and 2015.

Image Credit: NASA

The Veil Nebula

The Veil Nebula is about 2,100 light-years from Earth in the constellation of Cygnus (the Swan), making it a relatively close neighbor in astronomical terms. It’s the visible portion of a supernova remnant formed around 10,000 years ago known as the Cygnus Loop.

This image which only shows a portion of the nebula. It was assembled from data taken using five different filters with the Wide Field Camera 3 on the Hubble Space Telescope. Post-processing of the data brings out enhanced details of emissions from doubly ionized oxygen (blues) and ionized hydrogen and ionized nitrogen (reds).

Image Credit: NASA / ESA / Z. Levay

Your Astronomical Halloween Treat

Witch's BroomThe Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop, a large but relatively faint supernova remnant. NGC 6960 (the “Witch’s Broom”), near the foreground star 52 Cygni, is one of the main parts of the larger nebula.

Image Credit: Hewholooks (CC License 3.0)