NGC 7318 (also known as UGC 12099/UGC 12100 or HCG 92d/b) are a pair of collidinggalaxies about 300 million light-years away in the Constellation Pegasus. They are members of the famous Stephan’s Quintet.
"NASA's Chandra X-ray Observatory recently snapped this shot of energetic particles streaming from a pulsar—the rapidly rotating core left behind after a very massive star exploded as a supernova." -- National Geographic News
From our vantage point in the Milky Way Galaxy, we see NGC 6946 face-on. The big, beautiful spiral galaxy is located just 10 million light-years away, behind a veil of foreground dust and stars in the high and far-off constellation of Cepheus.