NGC 7331 Our Galaxy's Twin Wall Art including Frame tapestry and its exterior was blasted

and its exterior was blasted away in an immense release of energy astronomers call a supernova

Relatively cooler objects

The green and red colors seen in the reflection nebula represent 12- and 22-micron light coming from the nebula's dust grains warmed by nearby stars

and the total mass of gas and dust clouds is that of about 140 000 Suns

They are superimposed on a visible-light image of the region

NGC 7331 Our Galaxy's Twin Wall Art including Frame tapestry and its exterior was blastedNASA's Spitzer Space Telescope has captured these infrared images of a nearby spiral galaxy that resembles our own Milky Way. The targeted galaxy, known as NGC 7331 and sometimes referred to as our galaxy's twin, is found in the constellation Pegasus at a distance of 50 million light years. This inclined galaxy was discovered in 1784 by William Herschel, who also discovered infrared light. The evolution of this galaxy is a story that depends