Astronomers have used the NASA / ESA Hubble Space Telescope to image the tiny planetary nebula NGC 6886. These celestial objects signal the final death throes of mid-sized stars (up to about eight times the mass of the Sun); when such a star exhausts its supply of hydrogen fuel, the outer layers begin to expand and cool, which creates an envelope of gas and dust that shrouds the dying star. Read more
NGC 6879 (also PK 57-8.1) is a magnitude +12.5 planetary nebula located 7,000 light-years away in the constellation Sagitta.
The planetary nebula was discovered by American astronomer Edward Charles Pickering using a 38.1 cm (15 inch) refractor at the Harvard College Observatory on the 8th May 1883. The planetary nebula was rediscovered by English astronomer Ralph Copeland using a 15-inch Grubb refractor at the Dun Echt obsrvatory, Scotland (or from Arequipa?, Andes) on the 9th September 1884.
Right Ascension 20h 10m 26.6s, Declination +16° 55' 22"