Picture of 'Necklace Nebula', resembling diamonds in a necklace, shared by NASA

The official Instagram handle of NASA Hubble has shared a picture of 'Necklace Nebula', located around 15,000 light-years away. "It's the glowing aftermath of an exploded star, consisting of a bright ring that measures about 12 trillion miles across, dotted with dense, bright knots of gas that resemble diamonds in a necklace," it wrote.